Type: Prospective cohort study
Registration: PMCID: PMC8743126
Status: Published
Tags: Cohort, Healthcare workers, Pregnancy, Reproductive health
External URL: https://pmc.ncbi.nlm.nih.gov/articles/PMC8743126/
Frequent consecutive nights and quick returns in first trimester associated with increased preterm birth risk.
Prospective data how rotation direction, quick‑returns, and long duties tracked with pregnancy outcomes for night‑shift workers and night owls. Patterns in the data make ‘quick returns’ and rotation direction concrete risk features rather than abstract policy terms. For night‑shift teams and individuals, this ties long‑debated rota features to concrete outcomes, making schedule talk about health, not preference.
Large cohort with detailed roster data.