Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Study design and schematic framework of the study, presenting assumed associations between predictors (early entry into paid employment and physical work exposures), behavior-related risk factors (health behaviors and body mass index) and health outcomes.
