Sample attrition analysis in a prospective cohort study of medical graduates in China.

ABSTRACT:

Background

A major challenge of prospective cohort studies is attrition in follow-up surveys. This study investigated attrition in a prospective cohort comprised of medical graduates in China. We described status of attrition, identified participants with higher possibility of attrition, and examined if attrition affect the estimation of the key outcome measures.

Methods

The cohort study recruited 3,620 new medical graduates from four medical universities in central and western China between 2015 and 2019. Online follow-up surveys were conducted on an annual basis. Follow-up status was defined as complete (meaning that the participant completed all the follow-up surveys) and incomplete, while incomplete follow-up was further divided into 'always-out', 'rejoin' and 'other'. M

SUBMITTER: Li M 

PROVIDER: S-EPMC8758240 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature