ArticleInternational archives of occupational and environmental health2025
Association between shift/night work and irregular periods and period pain among two cohorts of Australian women 16 years apart: findings from the Australian longitudinal study on women's health.
Article in International archives of occupational and environmental health, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 1 paper.
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1 citing paper in PubMed.
- Sleep Disruption and Shift Work Associate with Increased Risk of Reproductive Endocrine Disorders: Evidence from UK Biobank and Mendelian Randomization.International journal of women's health · 2026Article
Corrections and comments
- Erratum issued
Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeTo examine the associations between shift or night work and irregular periods and period pain among two cohorts of Australian women, using data collected 16 years apart.
methodsWe used data from the 1989-95 (n = 6,767) and 1973-78 (n = 7,527) cohorts from the Australian Longitudinal Study on Women's Health, when participants were aged 24-30 years. Logistic regression models were used to assess the association between night or shift work and severe period pain and irregular periods, and to compare them to non-shift or night workers.
resultsWomen from the 1989-95 cohort who did night work reported higher odds of having experienced irregular periods (AOR = 1.28, 95% CI: 1.03, 1.59) compared to those who undertook shift work. However, there was no association between night work and severe period pain (AOR = 1.10, 95% CI: 0.86, 1.41). Among women in the 1973-78 cohort, neither severe period pain (AOR = 1.20, 95% CI: 0.82, 1.76) nor irregular periods (AOR = 1.38, 95% CI: 0.92, 2.06) were associated with night work. Across both cohorts, no associations were found between shift or night work and irregular or severe period pain when comparing shift or night workers combined to non-shift or night workers.
conclusionsNight workers reported higher odds of irregular periods compared to shift workers in the 1989-95 cohort; however, no consistent association was found with severe period pain. Future research should investigate whether this association is causal. Supportive workplace practices may benefit night workers experiencing irregular periods.
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