Evaluating bias with loss to follow-up in a community-based cohort: empirical investigation from the CARRS Study.

ABSTRACT:

Background

Retention of participants is a challenge in community-based longitudinal cohort studies. We aim to evaluate the factors associated with loss to follow-up and estimate attrition bias.

Methods

Data are from an ongoing cohort study, Center for cArdiometabolic Risk Reduction in South Asia (CARRS) in India (Delhi and Chennai). Multinomial logistic regression analysis was used to identify sociodemographic factors associated with partial (at least one follow-up) or no follow-up (loss to follow-up). We also examined the impact of participant attrition on the magnitude of observed associations using relative ORs (RORs) of hypertension and diabetes (prevalent cases) with baseline sociodemographic factors.

Results

There were 12 270 CARRS cohort members enrolled in Che

SUBMITTER: Kondal D 

PROVIDER: S-EPMC11771311 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature