Attrition Bias in an Observational Study of Very Low-Energy Diet: A Cohort Study.

ABSTRACT:

Objective

Obesity treatment is plagued by attrition. Estimates of attrition bias are needed. Thus, in this study, percent change from baseline BMI at 1, 2, and 3 years following enrollment in a 2-year weight management program using a very low-energy diet was calculated. Program data were supplemented with information from medical records.

Methods

Attrition was classified as occurring early (<6 months), late (6-21 months), at program completion (22-28 months), and after program completion (>28 months). Stepwise multivariable regression examined attrition and other covariates.

Results

A total of 881 subjects had ≥3 years of follow-up. BMI decreased by a mean (SD) of 11.8 (9.2), 8.6 (9.3), and 5.2 (10.0) kg/m² at 1, 2, and 3 years after enrollment, respective

SUBMITTER: Isaman DJM 

PROVIDER: S-EPMC7902335 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature