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12-Month Reach and Effectiveness of a University-Based Diabetes Prevention Initiative.

Gholami M, Jackson NJ, Loeb T, Chung UYR, Ramm K, Shedd K, Soetenga S, Elashoff D, Hamilton AB, Mangione CM, Duru OK, Moin T. 12-Month Reach and Effectiveness of a University-Based Diabetes Prevention Initiative. American journal of preventive medicine. 2023 Sep 21.

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INTRODUCTION: The University of California (UC) implemented the Diabetes Prevention Program (DPP) to address diabetes and obesity risk. This project examined the reach and effectiveness of this university-based DPP delivery approach. METHODS: This project compared 12-month weight change among three groups of UC beneficiaries with overweight/obesity: 1) those who received invitation letters and enrolled in UC DPP, 2) those mailed invitation letters but did not enroll, and 3) those who were not mailed letters and did not enroll (controls). Using 2012-2022 EHR, administrative and DPP cohort data, an interrupted time series was conducted in 2022-2023 to compare group differences in rate of weight change. RESULTS: Among 6,231 beneficiaries (132 UC DPP aware enrollees, 1,750 DPP aware non-enrollees, 4,349 controls), UC DPP enrollees were older (mean age 49), mostly women (76%), and more diverse (33% Asian, 8% Black, 20% Hispanic, 4% Multi/Other). Over 12-months of follow-up, UC DPP enrollee post-enrollment rate of weight loss was -0.68 lbs./month. UC DPP enrollees had significantly greater weight change from pre- to post-enrollment than DPP aware non-enrollees (adjusted -1.02 vs. -0.07 lbs./month, difference = -0.95, p < .001). Weight change among all participants who received letters with/without DPP enrollment was similar to controls. CONCLUSIONS: UC DPP reached a diverse group and was effective for weight loss at 12-month follow-up. However, UC DPP invitation letters to raise prediabetes and DPP awareness were not associated with significant weight change in the absence of DPP enrollment. University-based approaches to DPP delivery are effective and may enhance reach of DPP among at-risk adults.

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