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. 2023 May;38(6):1423-1430.
doi: 10.1007/s11606-022-07818-5. Epub 2022 Oct 11.

BMI Trends for Veterans Up to 10 Years After VA Enrollment Following Military Discharge

Dan V Blalock  1   2 , John A Pura  1 , Karen M Stechuchak  1 , Paul A Dennis  1   3 , Matthew L Maciejewski  4   5   6   7   8 , Valerie A Smith  1   3   9 , Anna Hung  1   3 , Katherine D Hoerster  10   11   12 , Edwin S Wong  10   12
Affiliations

BMI Trends for Veterans Up to 10 Years After VA Enrollment Following Military Discharge

Dan V Blalock et al. J Gen Intern Med. 2023 May.

Abstract

Background: Obesity (body mass index [BMI]≥30kg/m2) among US adults has tripled over the past 45 years, but it is unclear how this population-level weight change has occurred.

Objective: We sought to identify distinct long-term BMI trajectories and examined associations with demographic and clinical characteristics.

Design: The design was latent trajectory modeling over 10 years of a retrospective cohort. Subgroups were identified via latent class growth mixture models, separately by sex. Weighted multinomial logistic regressions identified factors associated with subgroup membership.

Participants: Participants were a retrospective cohort of 292,331 males and 62,898 females enrolled in VA.

Main measures: The main outcome measure was 6-month average VA-measured BMI over the course of 10 years. Additional electronic health record measures on demographic, clinical, and services utilization characteristics were also used to characterize latent trajectories.

Key results: Four trajectories were identified for men and for women, corresponding to standard BMI categories "normal weight" (BMI <25), "overweight" (BMI 25-29.99), and "with obesity" (BMI ≥30): "normal weight" and increasing (males: 28.4%; females: 22.8%), "overweight" and increasing (36.4%; 35.6%), "with obesity" and increasing (33.6%; 40.0%), and "with obesity" and stable (males: 1.6%) or decreasing (females: 1.6%). Race, ethnicity, comorbidities, mental health diagnoses, and mental health service utilization discriminated among classes.

Conclusions: BMI in the 10 years following VA enrollment increased modestly. VA should continue prioritizing weight management interventions to the large number of veterans with obesity upon VA enrollment, because the majority remain with obesity.

Keywords: BMI; longitudinal; obesity; trend; veterans.

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Conflict of interest statement

Dr. Blalock receives consulting fees from Eating Recovery Center. All authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Study inclusion and weight measurement.
Figure 2
Figure 2
Trajectories of BMI change over 10 years for male veterans, exploratory cohort.
Figure 3
Figure 3
Trajectories of BMI change over 10 years for female veterans, exploratory cohort.
Figure 4
Figure 4
Regression forest plots—males, validation cohort.
Figure 5
Figure 5
Regression forest plots—females, validation cohort.
See this image and copyright information in PMC

References

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