ArticleBritish journal of industrial medicine1989
Outcome of pregnancy in relation to irregular and inconvenient work schedules.
Article in British journal of industrial medicine, 1989. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 7 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
32 citing papers in PubMed, 7 syntheses or guidelines pooled it.
- Pregnancy, obstetrical and neonatal outcomes in women exposed to physician-related occupational hazards: a scoping review.BMJ open · 2023Pooled it
- Relationship between maternal caffeine and coffee intake and pregnancy loss: A grading of recommendations assessment, development, and evaluation-assessed, dose-response meta-analysis of observational studies.Frontiers in nutrition · 2022Pooled it
- Caffeine intake during pregnancy and adverse birth outcomes: a systematic review and dose-response meta-analysis.European journal of epidemiology · 2014Pooled it
- Preconception care: caffeine, smoking, alcohol, drugs and other environmental chemical/radiation exposure.Reproductive health · 2014Pooled it
- Miscarriage and occupational activity: a systematic review and meta-analysis regarding shift work, working hours, lifting, standing, and physical workload.Scandinavian journal of work, environment & health · 2013Pooled it
- Work activities and risk of prematurity, low birth weight and pre-eclampsia: an updated review with meta-analysis.Occupational and environmental medicine · 2013Pooled it
- Risk of prematurity, low birthweight and pre-eclampsia in relation to working hours and physical activities: a systematic review.Occupational and environmental medicine · 2007Pooled it
- The Fetal Effect of Maternal Caffeine Consumption During Pregnancy-A Review.Biomedicines · 2025Review
- Impact of night shift work on women's fertility, pregnancy and menopause.Frontiers in sleep · 2025Review
- Preconception sleep duration, non-daytime work schedules, and incidence of spontaneous abortion: a prospective cohort study.Human reproduction (Oxford, England) · 2024Article
- The Menstrual Cycle and Sleep.Sleep medicine clinics · 2023Review
- Occupational Exposure during Pregnancy and Effects on Newborns: A Nested Case-Control Study.Life (Basel, Switzerland) · 2023Article
- Impact of sleep patterns upon female neuroendocrinology and reproductive outcomes: a comprehensive review.Reproductive biology and endocrinology : RB&E · 2022Review
- Shiftwork and Light at Night Negatively Impact Molecular and Endocrine Timekeeping in the Female Reproductive Axis in Humans and Rodents.International journal of molecular sciences · 2020Review
- Pregnancy, childbirth, and puerperium outcomes in female firefighters in Korea.Annals of occupational and environmental medicine · 2020Article
- Article
- Pre-pregnancy caffeine and caffeinated beverage intake and risk of spontaneous abortion.European journal of nutrition · 2018Article
- Reproductive Health Concerns Among Female Firefighters.International fire service journal of leadership and management · 2018Article
- Article
- Sleep, sleep disturbance, and fertility in women.Sleep medicine reviews · 2015Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The relation between irregular and inconvenient working hours and the outcome of pregnancy was studied among women employed at a hospital in Sweden some time between 1980 and 1984. A questionnaire was distributed to 807 women; 81% replied. The pregnancies were divided into six groups with respect to work schedules during pregnancy. A slightly, but not significantly, increased risk of miscarriage was found in women who worked irregular hours or rotating shifts compared with women who worked only during the day (RR = 1.44, 95% confidence interval 0.83-2.51). Infants of non-smoking mothers who worked irregular hours had significantly lower birth weights than infants of non-smoking women working day time only. This difference was largest at birth order 2+. Similar results were found for infants of this birth order whose non-smoking mothers worked evenings or rotating shift.
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What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.