individuals pictured in cigarette advertisements. The latter are seen as attractive (by 69 percent), enjoying themselves (by 66 percent), well dressed (by 66 percent), sexy (by 54 percent), young (by 50 percent), and healthy (by 49 percent). There is no comparable data on how girl nonsmokers or young adult women view advertising (216). Thus, advertisers have been successful in creating a sense of mystery, sophistication, and power around the behavior of smoking. Although smoking was once frowned upon for women, people now respond less negatively to a woman smoking (16). There is evidence that, for some women, smoking is linked with attitudes and behaviors that comprise a socially valued and successful self-image, and that giving up smoking is a threat to that image (123). , A majority of former smokers and nonsmokers of both sexes in the 1975 Adult Use of Tobacco Survey (194) agreed with the statement, “Cigarette advertising should be stopped com- pletely.” The percentages for men were 56.9 percent for nonsmokers and 56.4 percent for former smokers, and for women, 68.2 percent for nonsmokers, and 62.5 percent for former smokers. However, only 42.6 percent of male smokers and 42.5 percent of females smokers agreed with the statement. It appears that adult smokers value cigarette advertisements, but why they do—whether for information about brand charac- terization and availability, identification with the image por- trayed, or some other reason—is not known. Fishbein concluded that cigarette advertising influences the decision to smoke. as well as the choice of brand. Furthermore, he points out that cigarette advertising may serve as a discriminative stimulus for smoking behavior. Advertising can influence the initiation of smoking, the choice of brands smoked, and the level of consump- tion. Commenting that the tobacco industry asserts that adver- tising serves only to influence brand choice and not initiation or: consumption, Fishbein maintains that it is somewhat unrealis- tic to assume that an advertisement which can do one of these things is not also capable of doing the other. While additional research on the effects of cigarette advertising is clearly neces- sary, this review suggests that cigarette advertising does affect cigarette consumption (63). Restrictions have now been placed on advertising in many countries in the world, including the United States. There is no uniform agreement that the ban on televised cigarette advertis- ing in the United States and the United Kingdom significantly reduced consumption. However, it is generally believed that each action of this sort—including the U.S. Surgeon General’s Reports and the Reports of the Royal College of Physicians, as 326 well as other smoking control measures such as taxation and legislation—has a cumulative effect on per capita consumption (8,142,202), THE FAILURE TO DISSEMINATE INFORMATION Many of the critical evaluations of public health campaigns conveying anti-smoking information maintain that little at- titudinal or behavioral change is ever effected (188). Fishbein (63) argues that there is insufficient information describing the complex relationships between cigarette smoking behavior and beliefs, attitudes, and intentions to make this conclusion. He further maintains that it is necessary to know to what extent decisions regarding initiation, reduction, increase or cessation are under attitudinal (individual, personal) or normative (society-influenced) control. The importance of personalizing the health message, and the failure of the public to personalize ~ the health messages that they have received is emphasized. For example, over 80 percent of smokers agree with the statement that smoking is hazardous to health. However, on the question, “Are you in any way concerned about the possible effects of cigarette smoking on your health?” only 25 percent of current smokers in the 1975 NCSH survey stated that they were “very concerned,” another 22.6 percent were “fairly concerned,” 18.9 percent were “only slightly concerned,” and a final 31.9 percent were “not concerned” (194). Fishbein maintains that the public is not effectively informed about the general danger to health posed by smoking and is even less informed about the connec- tion with specific diseases. He concludes that the content of an effective message is fourfold: that continued smoking leads to negative outcomes; that stopping smoking leads to positive out- comes; that personal relevance must be established; and that normative influences must be appealed to by maintaining that significant others think an individual should quit. Stress at Work A general model of stress at work (38) is worthy of considera- tion. Examination of the sources of stress at work (Figure 2) reveals a number of items that are especially salient for women. Discrimination against women in employment, role conflict, au- thority problems, inequity in promotions, exclusion from decision-making processes and the “old boys” network have been frequently discussed (68). Individual characteristics may be considered from a gender viewpoint as well; for example, some types of psychological disorders, such as anxiety and de- 327 8a8 Sources of Stress At Work Individual Characteristics Intrinsic to job: Poor physical working conditions Work overload Time pressures Physical danger, etc. The individual: Role in organization: Role ambiguity Role conflict Responsibility for people Conflicts re organizational boundaries (internal and external), etc. Level of anxiety Level of neuroticism Tolerance for Career development: Overpromotion Underpromotion Lack of job security Thwarted ambition, etc. ambiguity Type A behavioural pattern Relationships at work: Poor relations with boss, subordinates, or colleagues Difficulties in delegating responsibility, etc. Extra-organizational sources of stress: Organizational structure and climate: Little or no participation in decision-making Restrictions on behaviour (budgets, etc.) Office politics J tees of effective consultation, etc. Family problems Life crises Financial difficulties, etc. FIGURE 2.—A model of stress at work Symptoms of Occupational Disease ill Health Diastolic blood pressure Coronary heart disease Cholesterol level Heart rate Smoking Depressive mood Mental il health Escapist drinking Job dissatisfaction Reduced aspiration, etc. pression, are more prevalent among women than men (48,68). The Type A behavior pattern, which is associated with male cardiovascular disease, has been shown to be unrelated to sex once socioeconomic status is taken into consideration (172). An additional set of stressors originates in the extraorganiza- tional environment. A prospective study of the relationship of employment status and employment-related behaviors to coro- nary heart disease (CHD) incidence was conducted by Haynes and Feinleib (91). Working women scored higher on scales measuring daily stress, marital dissatisfaction, and aging wor- ries than men. They were also less likely to display overt anger than either homemakers or men. While incidence rates of coro- nary heart disease in working women were not significantly higher than in homemakers, an excess risk of CHD was iden- tified among women who were employed in clerical jobs and had children. The risk factors for CHD in this group included family responsibilities, suppressed hostility, a nonsupportive super- visor, and low job mobility over the preceding 10-year period. Smoking Habits of Health Professionals There are relatively few studies available which present gender-specific smoking rates in various professions. Health professionals were selected for analysis because they were more likely to be aware of the health consequences of smoking than the general public; this group has also been studied more exten- sively. PHYSICIANS The smoking habits of male and female physicians in five nations are presented in Table 15. Smoking rates in the general population are provided for comparison when supplied by the authors. No breakdowns by gender are available for the United States. Separate estimates of smoking rate in a small group of women physicians age 36 to 46 at the time of survey (205) and in a large sample of predominantly male (93 percent) physicians (195) are listed in the table. In addition, the wives of 3,990 physicians were queried about their own smoking habits and those of their husbands; no information is provided on the occupations of these women (77). Examination of the table shows that smoking rates of physicians, both male and female, tend to be much lower than general population rates. The only exception is the higher rate of current smokers among female physicians in Finland (200). The percentage of current smokers among the sample of U.S. female physicians is higher than that reported in other 3829 & TABLE 15.—Smoking habits of male and female physicians in selected countries 0 Percent Smokers Pop. Pop. Pop. Author Country Number Never Est. Current Est. Former Est. 1. Bourke, et al., 1972 (22) Ireland M 1359 17.9 — 19.7* 48.5 — 67.6" 33.6 — 12.7% F 221 51.5 53.9 26.7 — 38.6* 22.2 — 7.5* 2. Vuori et al., 1971 (200) Finland M 843 38 34 60 27 F 66 26 20 8 3. Wilhelmsen & Faith-Ell, 1974 (210) Sweden ? 33 38 29 54 27 19 4. Aaro et al., 1977 (1) Norway M_~ 740 35.3 — 53* 3nO 27'* F 398 21.7 — 36* 38: — 20'* 5. Westling-Wikstrand et al., 1970 (205) USA F 81 42 35.8 13.6 6. Greenwald et al., 1971? (77) USA M 3990 325 24 433 F 3990 35° 36 273 7. USDHEW, 1976 (195) USA M 36574 21 39 64! 43} 34} *Significant difference between percentages paired by (—). former smoker ‘Stopping rate = ever smoker 2Sample consisted of physicians and their wives whose profession was undefined. 3Percentages estimated from graph, not specified in text. 4Approximate total of M and F, estimated to be 93% male. countries and approaches the rates in the general population (205). Prevalence of smoking has a strong relation to demographic variables such as profession, income, and education. We would expect physicians to be in the highest category on each of these variables and, therefore, to have lower prevalence rates. Therefore, it would be relevant to examine the cross-tabulations for smoking prevalence by socioeconomic status, according to sex. According to the three studies providing comparative data, both female and male physicians are quitting at rates higher than the general population. The percentage of former smokers among female physicians, and estimates of quit rate, are lower than among male physicians in all but one of the studies listed. This trend may represent a time lag in the smoking behavior of women as compared to that of men, or there may be a lower quit rate among women physicians. In two studies, female physicians smoked more cigarettes per day than women in the general population (1,22). In contrast, wives of physicians smoked fewer cigarettes on the average than their husbands (77). A greater percentage of the wives of physicians than physicians themselves were smokers in every age group except the oldest. The percentage of current smokers appeared to be inversely related to age in the group of wives, but virtually stable across age for the physician-husbands. Husbands and wives tended to have similar smoking habits. Based on a small sample of women graduates of a single U.S. medical school, Westling-Wikstrand, et al. (205) reported that 58.8 percent of the current smokers belonged to the category “professor” (academic appointment of assistant professor or above, with or without board attainment) when ranked on pro- fessional attainment. The other categories were “boards” (spe- cialty board certification but not professional appointments), “no boards” (in practice without board certification or profes- sional appointment), and “not in practice.” The “professor” group was characterized by greater likelihood of being single and having fewer “habits of nervous tension.” Compared to other groups, this group had the lowest depression scores, aver- age anger scores, and the highest anxiety scores. The authors comment that this group of women was the most similar to their male colleagues. They may also have experienced fewer prob- lems with ambivalence about sex roles, self-image, or conflict over aggressive behavioral patterns. The presence of the high anxiety scale, however, casts some doubt on this generalization. Women in U.S. medical schools are subjected to significant psychological pressures and often experience emotional prob- lems and lack of confidence about achieving the goal of gradua- 331 tion (205). Female physicians also experience significant role conflict (19). The relevance of indices of stress to smoking patterns is again one of inference. If smoking serves as a coping mechanism—a means of reducing negative affect—then it is understandable that female physicians, or any other professional with elevated stress levels, would have higher current smoking rates than the general populace. It is also understandable that they might ex- perience more difficulty in quitting. PSYCHOLOGISTS A survey of psychologists in California state universities and colleges found that female psychologists were much more likely to smoke than their male colleagues (46). The rate of smoking was slightly higher than in male health professionals, and ap- proximately the same for female psychologists (38 percent) and nurses (195) (see Table 16). This smoking rate is significantly above the rate among pro- fessional women in general (25.6 percent) and was due to lower cessation rates among psychologists rather than higher initia- tion rates. The most common reasons given for smoking are the stress of work or school, and personal stress. Frieze, et al. state that professional women have to exhibit “male-like” character- istics in order to survive in their jobs, but that these character- istics are often met with criticism and hostility (67). Thus, social and occupational demands are at odds with each other. Fur- thermore, there is evidence that female psychologists face very real sex discrimination in the evaluation of their work (67). Dicken and Bryson (46) report a high degree of power fan- tasies among female psychologists who smoke. This supports Fisher’s finding that female smokers in general seem preoc- cupied with the issue of power (64). He speculates that cigar- ettes are used defensively against feelings of powerlessness, weakness, and inferiority. Elevated suicide rates are another correlate to the evidence of excessive stress and difficulty in coping experienced by some female professionals. These higher rates, compared with the general female population, have been observed among women psychologists, chemists, and physicians (124,164). Factors such as ambivalence about success, role conflict and marginality were offered as dynamics. However, it is not possible to deter- mine whether these higher suicide rates are due to the self- selection of suicide-prone women into these and possibly other professions, or to the difficulties encountered in professional training and practice (or to an interaction of both). 332 NURSES A number of studies have shown a higher rate of smoking among nurses than in the general female population in the United States. The most recent assessment of nurses’ smoking behavior was conducted in 1975 (199). In Table 16, smoking habits of nurses are compared with those of adult U.S. women and other groups of health professionals. Between 1969 and 1975, the proportion of nurses who were current smokers rose from 37 to 39 percent. Every other cate- gory of health professional (physician, dentist, and pharmacist) had substantially reduced smoking rates. The membership of these three professions is predominantly male and current smoking rates vary from 21 to 28 percent. If one examines quit rates in 1975 among the four categories of health professionals, it is clear that the majority of physicians, dentists, and pharma- cists who ever smoked cigarettes have quit: 64, 61, and 55 per- cent respectively. Among nurses, only 36 percent have quit, which does, however, compare favorably with adult women (34 percent) and working women (30 percent) (199). Noll surveyed smoking behaviors of nurses by work setting (see Table 17) (135). The overall percentage of current smokers in this survey was 37 percent, compared to a national average (for 1966) of 33.7 percent in women. There was a smaller per- centage of never smokers (41.3 percent) among nurses in that survey than among the female population (56.8 percent), suggesting a higher quitting rate at that time as well. From Table 17 it appears that there is no selective recruitment into the various nursing specialties; the proportion of never smokers is fairly equal across work settings. Differences do appear, how- ever, in the proportion of current smokers according to work setting. Highest rates of smoking are found in psychiatric and pediatric settings, and lowest rates in the four categories con- nected to education and community involvement: nursing edu- cation, working in the community, elementary or high school nursing, and working in a doctor’s office. In Great Britain, only 26 percent of maternity nurses smoked regularly, compared to 37 percent of those in general nursing (106). In the United Kingdom, approximately the same propor- tion of nurses smoke as women in the general population —44 percent (106,154). Knopf Elkind reports differences in smoking among different types of ward nursing staff. Trained nurses had 41 percent cur- rent smokers, learners had 28 percent, nursery nurses had 14 percent, and auxiliaries had 61 percent current smokers (106). Lampman reported a similar excess of smokers among nurses 333 ree TABLE 16.— Percentages of cigarette smokers (S), former smokers (FS), and ever smokers (ES) and cessation ratio (FS/ES) among psychologists, nurses, and other selected health professionals Sample N Ss FS ES FS/ES Male and predominantly male samples CSUC male psychologists 258 28 35 62 55 Eminent experimental psychologists— 90% male (Lawton and Goldman, 1961) q2 53 11 64 17 Psychiatrists —% male not reported (Tamarin and Eisinger, 1972) 309 42 27 69 39 American Public Health Association male members (Eyres, 1973) 3,569 21 40 61 66 Physicians—93% male (USPHS, 1977) 8,657 21 42 63 67 U.S. adult males (USDHEW, 1976) 5,702 39 29 69 42 Female and predominantly female samples CSUC female psychologists 86 38 19 57 33 American Public Health Association female members (Eyres, 1973) 1,973 31 31 62 50 Nurses— 98% female (USPHS, 1977) 2,429 39 22 61 36 U.S. adult females (USDHEW, 1976) 6,327 29 14 43 33 NOTE: CSUC = California State University and Colleges. SOURCE: Dicken, C. (46). TABLE 17.— Cigarette smoking status by work setting for nurses (percent) Cigarette Smoking Status Total* Work Setting Current Former Never Percent N Surgical Units 41.2 19.4 39.4 100.0 529 Medical Units 37.8 18.2 43.9 99.9 476 Operating, Labor, Delivery Emergency Room 39.8 15.2 45.0 100.0 485 Maternity Unit 36.2 17.2 46.6 100.0 197 Pediatrics Unit or Setting 46.6 8.8 44.6 100.0 80 Psychiatric Unit or Setting 49.9 18.2 32.0 100.1 135 Nursing Education Setting 24.6 26.8 48.7 100.1 90 In the Community 26.1 33.4 40.6 100.1 264 Elementary or High School 27.5 36.4 36.1 100.0 217 Doctor’s Office 24.2 33.8 41.9 99.9 338 Out-Patient Clinic 42.5 15.1 42.5 100.1 113 Other and Mixed 41.3 18.4 40.3 100.0 1,078 *Total N = 6,012 SOURCE: Noll, C.E. (135). aides (95.2 percent female) in a large metropolitan hospital in the United States (110). Fifty-two percent of that group smoked, compared with 36 percent of the medical nurses (99.3 percent female) and 40 percent of the student nurses (95.6 percent female). This survey was aimed at identifying smoking within the hospital. Thus, true prevalence in this sample can only be higher. Compared to other female health professionals (see Table 16) in the United States, nurses’ quit rates are above some (psy- chologists, U.S. adult women) and below others (American Pub- lic Health Association female members). Knopf Elkind points out that in the British population other female-dominated pro- fessions, such as primary school teachers, health visitors and domiciliary midwives, have noticeably lower rates of smoking than hospital nurses (106). Entry into the profession of nursing is associated with taking up daily smoking but the degree of occupational stress in a population of 300 British student nurses was not different for smokers and nonsmokers (92). This finding does not rule out the use of smoking as a stress- reduction mechanism, however. Other factors which might contribute to a high smoking rate among nurses are work overload and frustration in professional relationships with physicians. Knowledge of health consequences of smoking is high among nurses, but it has been shown that student nurses are less well- informed than medical students (154). Nurses who quit smoking 335 do cite protection of future health as a major reason (75,92). Nurses who smoke are less likely than nonsmokers to agree that not smoking is a preventive measure against cancer (106). Simi- lar refusal to acknowledge health risks of smoking is found among smokers in the general population (194). Whether this represents a real lack of knowledge or a method of reducing cognitive dissonance through denial is unknown. The problem is particularly critical for nurses (and other health professionals) since they serve both as exemplars and as providers of informa- tion (106). The Pregnant Smoker—a Special Target The pregnant woman is in a unique life situation. Every sub- stance she ingests and every behavior that she manifests can affect the present and future health status of the fetus she is carrying. If she smokes, the nicotine, carbon monoxide, and hy- drogen cyanide which she inhales all cross the placental barrier and enter the bloodstream of the fetus. The risk factors for both mother and fetus have been extensively reviewed elsewhere in this volume as well as in previous reports from the Surgeon General (198). (See also Pregnancy and Infant Health in Part II of this Report). It is estimated that between one-quarter and one-third of pregnant smokers quit smoking for the duration of pregnancy and that another third cut down. This section reviews the current literature on sources of in- formation available to the pregnant smoker, summarizes avail- able data on prevalence of current smoking and smoking cessa- tion during pregnancy, and discusses the problem of cessation from a behavioral viewpoint. SOURCES OF INFORMATION The same classes of information discussed in the previous sec- tion are available to the pregnant smoker. How the pregnant smoker uses these sources and her degree of confidence in the information provided seems to be a function of socioeconomic status and parity. Information is distributed through health professionals (primarily physicians and nurses), peers and fam- ily, community resources, and the media. Women in lower socioeconomic classes tend to rely more on lay referral systems, such as peers and family, than upon mass | media or medical sources (10,74). Personal transmission of in- formation seems to be more highly valued and readily adhered to (71). Middle and upper class women are more likely to utilize 386° impersonal sources such as mass media and physician-supplied information (74). In one study of predominantly working class British women, the mode of exposure to smoking information ranked as follows: 84 percent had seen it on television; 65 percent were told by family or friends; 52 percent had seen posters and leaflets; 37 percent had been told by husbands; 34 percent used books and magazines; and 25 percent had been told by a medical source (16 percent from a doctor, and 9 percent from a nurse) (11). The authors comment that television, posters, and leaflets are in- adequate for the delivery of statistical information; books, which are better sources, were used much less than these other sources. Baric and MacArthur present a discussion of health norms in pregnancy (10). Seventy-nine percent of the sample were aware of some norm relating to smoking in pregnancy: 39 percent thought they were expected not to smoke at all, and an additional 40 percent thought they were expected to reduce their smoking. All of the women could name at least one source of information; 98 percent had been exposed to mass-media messages to quit smoking. Smoking seemed to be undergoing a change in norm status, from generality to specificity, i.e., from being a general health menace to one with specific conse- quences, such as a threat to the health of the baby. The issue of normative behavior in smoking and personaliza- tion of message should be crucial to informational campaigns, according to Fishbein’s theory (63). Social support from a spouse should also be critical, as would be involvement of significant others. Women about to have their first baby are more likely to be- lieve educational materials than multiparous women (11,50). This finding suggests that different modes of intervention or different emphases should be developed for primiparous and multiparous women. Physician Advice The physician represents one of the most knowledgeable fig- ures the pregnant woman will encounter as a source of informa- tion. Consequently, estimates of the frequency with which the physician delivers advice on smoking are of importance. Three such estimates are available from national samples in the United States. In the first study, conducted in the mid- 1960s, 37 percent of physicians reported that they advised all or almost all (95 to 100 percent) of their pregnant patients to quit smoking or cut down sharply. Obstetricians were more likely to deliver such advice to pregnant patients (49 percent) than were physicians in general practice (38 percent) (76). 337 YJ Major n= 5401 PS] Contributing Cause ua Association No Association 100 F- 93.2 90.4 92.6 = ox Sd bo 52 o, 2 5 80r oe s 7 5 60F y Y a Y Y 40 GZ Y 20 Y 0 AES Neonatal Coronary Chronic Pulmonary = Lung Death Artery Bronchitis Emphysema Cancer Disease FIGURE 3.—Beliefs of OB-GYN specialists about the association of maternal smoking with neonatal death and other selected diseases SOURCE: Danaher, B.G. (40). The Physician Advice Survey conducted by the Center for Disease Control examined the beliefs and behavior of physi- cians specializing in Obstetrics and Gynecology (OB-GYN) in the United States (40). The OB-GYN specialty practice includes preventive medical care in the form of specific suggestions re- garding hygiene and family planning and, during pregnancy, active participation in directing perinatal care (40). The beliefs of OB-GYN specialists about the relationship between maternal smoking and neonatal death are presented in Figure 3, along with their belief about some of the more common diseases as- sociated with smoking. Because neonatal death can result from a great many factors, the attribution of causality is somewhat lower than for the other conditions represented. However, it is notable that 23.6 percent of the physicians deny the existence of any relationship. Congruent with the estimate from the 1960s, 45.3 percent of OB-GYN specialists in this survey claimed to instruct all or almost all of their patients to quit or cut down on smoking (see Figure 4). Another 13.1 percent delivered such ad- vice to most or many (65 to 95 percent). A noticeably smaller fraction of physicians who are current smokers deliver this message than ex-smokers or nonsmokers. The 1975 Survey of Adult Use of Tobacco, sponsored by the National Clearinghouse on Smoking and Health, included a 338 70 NjAdvise All + Almost All Patients 60 Most + Many EFew + None 50 45.3 40 Percent 30 20 10 0 Total Current Former Non- (n = 3208) Smokers Smokers Smokers (n =622) (n = 1187) (n = 1404) FIGURE 4.— Percentage of patients advised to quit or cut down their smoking by the smoking behavior of the advis- ing obstetrician-gynecologist SOURCE: Danaher, B.G. (40). questionnaire directed at smoking habits in pregnant women. A preliminary analysis of the results has been made (89). Out of 12,029 respondents interviewed in 1975, a total of 1,225 women (814 current smokers and 411 former smokers) were adminis- tered questions about their smoking habits during pregnancy. Each of the 983 respondents (664 current smokers and 319 former smokers) who had ever been pregnant was asked whether her doctor suggested that she quit smoking or cut down during her last pregnancy. Table 18 displays the results by year of last pregnancy. The percentage of women reporting such advice from their doctors rose steadily. Only 14.6 percent of women who had last been pregnant from 1965 to 1969 claimed to have been advised by their doctor either to stop or cut down; 23.7 percent of women last pregnant from 1970 to 1975 remem- bered such advice. These estimates are considerably smaller than those supplied by physicians themselves (40,76). There are several possible explanations for the discrepancy: the women were reporting retrospectively, and memory may have been dis- torted; a selective under-reporting of advice may have occurred; or the populations of physicians and patients may be entirely nonoverlapping. Retrospective data have been shown to be un- reliable in one pregnancy study (49). Unfortunately, sample sizes were too small to provide reliable estimates of the per- 339 TABLE 18.—Distribution of responses of current former smokers who were ever pregnant to the question “Did your doctor suggest that you cut down or stop smoking cigarettes during your last pregnancy?” Percent by Year of Last Pregnancy (Prior to (1965- (1970- (1965- Physician's Advice 1965) 69) 75) 75) Quit smoking 5.6 6.2 10.8 9.3 Cut down smoking 5.7 8.4 12.9 11.4 No advice given 70.5 64.1 65.6 65.1 Not smoking at the time 16.4 20.6 9.1 12.9 Had no doctor 0.5 0 0.2 0.1 Don’t know or no answer 1.3 0.8 1.3 0.9 Number of respondents 466 215 291 506 SOURCE: National Clearinghouse for Smoking and Health (194). centage of women who followed the advice of a physician to stop smoking during pregnancy. Such data might have yielded an estimate of the effectiveness of such advice. In sum, over 50 percent of physicians claim to advise their pregnant patients to eliminate or sharply curtail their smoking during pregnancy, but a much smaller percentage of pregnant women recall such advice. PREVALENCE OF SMOKING AND QUITTING DURING PREGNANCY The prevalence of smoking in pregnant women (before special cessation efforts) should be roughly equivalent to the preva- lence of smoking in the female population in the same age range, corrected for socioeconomic status. Ten studies con- ducted in developed countries, reported between 1971 and 1973, show a range from 23.4 percent to 47.6 percent in prevalence of tobacco use (145). The median rate is 42.75 percent smokers for the entire sample. A survey (conducted during the course of the pregnancy) of 9,553 pregnant women who represent a cross sec- tion of the general population in the Riverside-San Bernadino- Ontario (California) area was recently completed (108). Prelimi- nary results indicate that 44.5 percent of all women surveyed either continued to smoke during pregnancy or had smoked be- fore, but not during, this pregnancy. Since the precise time of cessation is not clear, a more conservative estimate is that 33.3 percent of women continued to smoke for the duration of their pregnancy. This estimate is well within the range of those de- rived from the Population Report analysis (145). 340 There is a paucity of race-specific information on smoking prevalence during pregnancy. Niswander and Gordon (134), ina study encompassing 14 U.S. cities, reported greater prevalence of smoking among white than black women (53.65 percent vs. 41.85 percent, respectively). This is a high estimate and reversal of the prevalence rates presented in Table 7. The finding is simi- lar to the previously presented data, in that white women smoked more cigarettes per day than black women: only 3.3 percent of black women smokers consume a pack a day or more, compared to 13.4 percent of white women in this study. Smoking is slightly less prevalent in black than in white women in the sample of Kuzma and Phillips (108): 57.3 percent of black women and 53.3 percent of white women have never smoked. For His- panic women, the percentage is somewhat higher, 61.9 percent never-smokers. Table 19 summarizes the results of 11 studies reporting rates of discontinuing smoking during pregnancy. The overall rate of cessation among regular smokers ranges from 0.9 percent to 35 percent, which is the figure most often anecdotally cited. The median is closer to 20 percent. Only one study provides ethnic data on smoking cessation during pregnancy (108). In this study, it should be remembered, stopped smokers are women who smoked prior to, but not dur- ing the pregnancy, so that quitting may not have been pregnancy-specific. Rates are very similar for white, black and Hispanic women: 24.5 percent, 24.9 percent and 28.7 percent, respectively, were stopped smokers in this study. Even acute abstinence from cigarette smoking may be of value, if it occurs immediately prior to giving birth. In the United Kingdom, women are often admitted as early as 48 hours before elective delivery; abstaining from smoking for that period of time was found to result in a net percent increase in available oxygen as COHb was excreted (42). Such a temporary benefit may actually be critical under acutely stressful condi- tions, and where there is chronic placental insufficiency. Cutting down on smoking during pregnancy would appear to be better than no change in behavior, especially for those ad- verse effects upon the fetus which show a dose-response rela- tionship. However, cutting down on number of cigarettes does not always imply a reduction in delivered dose of nicotine or other tobacco smoke constituents (79,80). When smoking behav- ior was measured over the course of pregnancy in regular smokers (5 to 30 cigarettes per day for at least 5 years), a de- crease in number of puffs per cigarette occurred as pregnancy progressed (6). Like puffing rate, the COHb concentration also decreased over time in pregnancy. However, in these subjects there was no significant change in nicotine dose extracted from 341 = TABLE 19.—Percentage of current smokers who altered smoking behavior during pregnancy Change in Smoking Habit— Percent of Women Cut Quit Down No Miscellaneous, Author and Date N Quit Temporarily Only Increased Change or Comment 1. Kullander & Kallen, 1971 (107) 2,806 0.9 1.3 97.3 +0.5 Initiated 2. Andrews & McGarry, 1972 (4) 6,733 14.7 Maternities only 3. Butler et al., 1972 (29) 841 18.4 Quit by end of 4th month 4. Schwartz et al., 1972 (171) 1,188 31.0 10.0 5. Baric et al., 1976! 134 14.9 3.0 82.1 Quit by 1st ante-natal visit 6. Graham, 1976 (74) 50 33.3* 33.3* 33.3 *1/3 quit or cut down; 1/3 cut down temporarily 7. Baric & MacArthur, 1977! (10) 133 22.5 6.0 33.1 5.3 26.3 +6.8 reduced temporarily 8. Donovan, 1977 (49) 959 12.5 5.6 9. Yankelovich et al., 1977 (216) ? 35.0 32.0 hE TABLE 19.—Percentage of current smokers who altered smoking behavior during pregnancy—Continued Change in Smoking Habit— Percent of Women Cut Quit Down No Miscellaneous, Author and Date N Quit Temporarily Only Increased Change or Comment 10. Harris, 1979 (89) 4092 26.5 24.8 7.9 36.9 +3.9 changed brand or switched to filter cigarettes 82.2 of quitters resumed smoking after delivery 11. Kuzma & Phillips, 1979 (108) 4,249 25.1 13.4 of quit smokers were again smoking at 1-5 mo. post-delivery NOTE: !These two studies may be composed of overlapping samples. 2Of the 506 women in the NCSH survey whose last pregnancy occurred during 1965-75, 409 reported smoking either before or during pregnancy. ’Percent who smoked prior to, but not during this pregnancy, calculated as part of smoker sample. the cigarette over the duration of the pregnancy. Some alter- ation in puffing pattern, presumably in inhalation, produced the compensation. Thus, caution must be exercised in the in- terpretation of “cutting down.” There is even less information available on the percentage of quit-smokers who return to smoking after delivery. Table 19 provides two extremely divergent estimates: 82.2 percent (89) and 13.4 percent (108). Because we are dealing with relatively small sample sizes, the reliability of such data is not very high. Much more information must be accumulated before any firm statements about recidivism can be made. Women who quit dur- ing pregnancy have an excellent opportunity to change a behav- ior for life, with benefits both to themselves and to their chil- dren (see Recommendations). PSYCHOSOCIAL FACTORS IN QUITTING Health reasons, primarily centering around preventing harm to the fetus, are most often given as reasons for quitting. Yan- kelovich, et al. (216) report that 62 percent of young women smokers believe that smoking can harm the fetus and norms against smoking have been discussed (10). The sickness experi- enced as a part of pregnancy can also be a reason to give up smoking (11). It has also been reported that women who smoke before pregnancy show a significantly increased incidence of appetite cravings and aversions, which may be associated with quitting (41). A closely related aspect of maternal health is weight gain. Preventing excessive weight gain has even been given as a rea- son to continue smoking during pregnancy (50). Baric and MacArthur included control of weight gain as a norm during pregnancy; 24 percent of this sample expressed awareness of social expectations in this area (10). The issue of how much weight it is appropriate to gain in pregnancy varies according to time and culture, so the generality of this finding is unclear. Little is known about problems in quitting during pregnancy. The role of cigarettes as stimulants or tension reducers may be altered during this period. Abstinence symptomatology has also not been documented. A composite picture of the successful quitter has been drawn by Baric, et al. and also by Kuzma and Phillips (11,108). Baric, et al. list educational qualifications as being positively related to quitting, followed by sickness in early pregnancy. Other distin- guishing characteristics are smoking fewer cigarettes before pregnancy (also see 49,171), having started smoking at an older age, having stopped previously for at least 6 months, having 344 heard about harmful effects of smoking from more sources, firmly believing that smoking was harmful to the baby, and finally, being encouraged to stop or being joined in the cessation effort by their husbands (47,166). Kuzma and Phillips identified a number of similar character- istics: higher educational level; greater family income; being married; being employed; more frequent church attendance; having a spouse who does not smoke; and no illicit drug use (106,108). The characteristics described—advanced educational level, higher socioeconomic status, wider information base, belief in stopping for the sake of the fetus, and spousal support—all fit with a model of behavior change involving information, per- sonalization, and social norms (63). Three studies evaluate smoking cessation interventions for pregnant women (11,41,49). Tables 9 and 10 show reported abs- tinence figures for two studies. One study (11) showed no dif- ference between intervention and control groups, and the sec- ond study (41) showed 50 percent abstinence at 9-month follow- up for those completing treatment (11,41). This latter result is very encouraging but is based on a very small sample in an affluent community where the aforementioned factors of educa- tional level, high socioeconomic status and orientation toward professional advice are operative. RECOMMENDATIONS The preceding discussion has revealed a number of findings which may be useful in improving methods of reaching the pregnant woman and offering her cessation interventions. 1, Pregnant women seem to know that smoking is harmful to health, and most acknowledge that it can be directly harmful to the fetus. This information about the baby’s health should be made as specific as possible, and the mother’s own health should be intricately interwoven in the theme. Quitting is for the good of both mother and baby, not the baby alone. The harmful as- pects of smoking and the benefits of not smoking must be equally emphasized. 2. Mass media, such as television and film, are particularly good avenues for portraying women of varying ethnicity in a number of geographical and socioeconomic settings. Because of gender identification it is important to utilize women as the transmitters of information and advice. Information should be dispensed by as many different sources of contact in the pre- natal clinic (or doctor’s office) as possible, not solely by the 345 physician. The awazeness of various health professionals should be raised in this regard. 3. Social norms and lay referral systems should be used as part of information dissemination and modeling influences. This is particularly true for women of lower socioeconomic status. It is important to involve the father of the child in the normative belief system and in a direct supportive effort of quitting. This should be particularly timely in an era when more and more couples are experiencing pregnancy and birth as a two-person process. 4. Much more emphasis must be placed on permanent smok- ing cessation rather than just during the time of pregnancy. Positive aspects of remaining an ex-smoker include better health for the mother and child and the future impact of role modeling as the child grows. Summary 1. The percentage of 17-18 year old women who smoke has shown a steady rise between 1968 and 1979. It now appears, however, that the increase in smoking prevalence among all 12-18 year old females has leveled off and begun to decline. Young women born after 1962 show a substantially reduced in- itiation of smoking and will probably have a much lower preva- lence of smoking as adults. 2. Those young women who do begin to smoke are starting to smoke regularly at a younger age, with more than half of the male and female adolescents who begin to smoke starting before the 10th grade. 3. The earlier tobacco is used and the greater the number of cigarettes smoked per day, the less likely an attempt to quit will be successful. , 4. The percentage of women smokers who smoke more than one pack per day is increasing. 5. Adolescent and.adult women are more likely to use low “tar” and nicotine cigarettes, smoke fewer cigarettes per day and in- hale less deeply than do men, but the difference between the sexes in these patterns of smoking is decreasing. Adolescent and adult black women are more likely to be smokers than their white peers, but they smoke fewer cigarettes per day. 6. Adolescents from low income families, single parent families, and families with lower parental educational levels are more likely to become smokers. 7. Female and male adolescents are more likely to begin smoking if a parent or older sibling also smokes. 346 8. Adolescent smokers associate with peers who smoke, and nonsmokers associate with nonsmoking peers. 9. Adolescent girls overestimate the percentage of their peers who smoke and they have a very positive image of the people in cigarette advertisements, but they are less likely than adoles- cent boys to see smoking as a social asset. 10. Adolescent girls who smoke tend to be more outgoing, but feel less able to influence their future. 11. Adolescents experience stress due to feelings of unattrac- tiveness, incompetency in school achievement and personal re- lations, limited opportunity for personal growth and concern over future social and economic roles. This stress may be the common mechanism producing the increased rates of smoking in some groups. 12. 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