The UCLA Center for Health Policy Research (UCLA) was selected to evaluate PRIME. The interim evaluation was designed to assess the goals of PRIME using a conceptual framework adapted from the Triple Aim: enhanced infrastructure, better care, better health, and lower costs (Exhibit 2 of the PRIME Evaluation Design, Exhibit 3 of this document). Measurement of progress of participating hospitals in implementing PRIME was based on a combination of qualitative and quantitative data analysis. UCLA conducted surveys and interviews with PRIME hospitals, assessed self-reported metric achievements from hospital reports and independently analyzed Medi-Cal enrollment and claims data from DHCS as well as California discharge data from the Office of Statewide Health Planning and Development (OSHPD). These data provided detailed information on how hospitals developed the necessary infrastructure and undertook activities to implement PRIME projects, and the progress they made in meeting their targets, including a comparison to patients of hospitals not participating in PRIME. Surveys and interviews reflected the early implementation efforts by hospitals. In addition to system-wide implementation of the core components, the evaluation included a detailed assessment of infrastructure development, implementation process, level of effort and difficulty, and solutions to data and metric challenges for each project under the three program domains. The analyses included an examination of two elements of metrics and progress towards meeting pre-determined targets. The metric achievement rate was the hospital-reported rate for the metric; the metric achievement value was assigned by DHCS and indicated the degree to which the hospital met the target (ranged from 0-1).The quantitative data allowed for a rigorous comparison of trends in metrics before and during PRIME and in comparison to patients of other California hospitals.
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