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Hung A, Wong ES, Dennis PA, Stechuchak KM, Blalock DV, Smith VA, Hoerster K, Vimalananda VG, Raffa SD, Maciejewski ML. Real World Use of Anti-Obesity Medications and Weight Change in Veterans. Journal of general internal medicine. 2023 Nov 14.
BACKGROUND: Anti-obesity medications (AOMs) can be initiated in conjunction with participation in the VA national behavioral weight management program, MOVE!, to help achieve clinically meaningful weight loss. OBJECTIVE: To compare weight change between Veterans who used AOM?+?MOVE! versus MOVE! alone and examine AOM use, duration, and characteristics associated with longer duration of use. DESIGN: Retrospective cohort study using VA electronic health records. PARTICIPANTS: Veterans with overweight or obesity who participated in MOVE! from 2008-2017. MAIN MEASURES: Weight change from baseline was estimated using marginal structural models up to 24 months after MOVE! initiation. The probability of longer duration of AOM use ( = 180 days) was estimated via a generalized linear mixed model. RESULTS: Among MOVE! participants, 8,517 (1.6%) used an AOM within 24 months after MOVE! initiation with a median of 90 days of cumulative supply. AOM?+?MOVE! users achieved greater weight loss than MOVE! alone users at 6 (3.2% vs. 1.6%, p? < 0.001), 12 (3.4% vs. 1.4%, p? < 0.001), and 24 months (2.7% vs. 1.5%, p? < 0.001), and had a greater probability of achieving? = 5% weight loss at 6 (38.8% vs. 26.0%, p? < 0.001), 12 (43.1% vs. 28.4%, p? < 0.001), and 24 months (40.4% vs. 33.3%, p? < 0.001). Veterans were more likely to have? = 180 days of supply if they were older, exempt from medication copays, used other medications with significant weight-gain, significant weight-loss, or modest weight-loss side effects, or resided in the West North Central or Pacific regions. Veterans were less likely to have? = 180 days of AOM supply if they had diabetes or initiated MOVE! later in the study period. CONCLUSIONS: AOM use following MOVE! initiation was uncommon, and exposure was time-limited. AOM?+?MOVE! was associated with a higher probability of achieving clinically significant weight loss than MOVE! alone.