The impact of a managed care obesity intervention on clinical outcomes and costs: a prospective observational study.

Abstract

To evaluate the impact of a managed care obesity intervention that requires enrollment in an intensive medical weight management program, a commercial weight loss program, or a commercial pedometer-based walking program to maintain enhanced benefits. Prospective observational study involving 1,138 adults with BMI ≥ 32 kg m(-2) with one or more comorbidities or BMI ≥ 35 kg m(-2) enrolled in a commercial, independent practice association-model health maintenance organization. Body mass index, blood pressure, lipids, HbA1c or fasting glucose, and per-member per-month costs were assessed 1 year before and 1 year after program implementation. Program uptake (90%) and 1 year adherence (79%) were excellent. Enrollees in all three programs exhibited improved clinical outcomes and reduced rates of increase in direct medical costs compared to members who did not enroll in any program. A managed care obesity intervention that offered financial incentives for participation and a variety of programs was associated with excellent program uptake and adherence, improvements in cardiovascular risk factors, and a lower rate of increase in direct medical costs over 1 year.