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Occupational predictors of pregnancy outcomes in Irish working women in the Lifeways cohort
Abstract
Objective The objective of this study was to explore the association between occupational factors and pregnancy outcomes in a prospective cohort of Irish pregnant women. Design This study has a prospective design. Population The Lifeways cohort included 1124 pregnant women, 676 of whom delivered a single baby and were working at their first prenatal care visit when they filled in a self‐administered questionnaire. Methods Occupational factors were measured using this questionnaire and included eight factors describing job and working conditions. Data including pregnancy outcomes were also obtained from clinical hospital records. Logistic regression analysis was used to adjust for well‐known risk factors. Main outcome measures Birthweight (≤3000 g and ≤2500 g), preterm delivery (<37 gestation weeks) and small‐for‐gestational‐age. Results Significant associations were found between physical work demands and low birthweight (≤2500 g) and working with between a temporary contract and preterm delivery. Trends were also observed between working 40 hours or more a week and shift work, and birthweight of 3000 g or less. The study of a cumulative index showed that being exposed to at least two of these occupational factors significantly predicted birthweight of ≤3000 g (OR = 2.44, 95% CI: 1.17–5.08) and of ≤2500 g (OR = 4.65, 95% CI: 1.08–20.07) and preterm delivery (OR = 5.18, 95% CI: 1.00–27.01). Conclusions Our findings suggest that occupational factors may predict birthweight through their predictive effects on preterm delivery. This is one of the few prospective studies on pregnancy outcomes that include working conditions. As they may be modifiable, occupational factors deserve more attention in relation to birth outcomes.
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“No association was found between SGA and whether the mother had a contract post, worked shifts or long hours or had an active or stressful job.81”
From Socioeconomic inequalities and adverse pregnancy outcomes in the UK and Republic of Ireland: a systematic review and meta-analysis (2021) · cites this paper as [81]
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“however, studies using other comparison groups reported no significant associations with high or LBWs.81 85–87”
From Socioeconomic inequalities and adverse pregnancy outcomes in the UK and Republic of Ireland: a systematic review and meta-analysis (2021) · cites this paper as [81]
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Cited by
Maternal education level and low birth weight: a meta-analysis
Silvestrin, S., da Silva, C. H., Hirakata, V. N., Goldani, A. A. S., Silveira, P. P., & Goldani, M. Z. (2013) · Jornal de Pediatria · doi:10.1016/j.jped.2013.01.003 · Cited by 155
Thomson, K., Moffat, M., Arisa, O., Jesurasa, A., Richmond, C., Odeniyi, A., Bambra, C., Rankin, J., Brown, H., Bishop, J., et al. (2021) · BMJ Open · doi:10.1136/bmjopen-2020-042753 · Cited by 154
Metadata
- Authors
- Niedhammer, I., O’Mahony, D., Daly, S., Morrison, J., Kelleher, C., & the Lifeways Cross‐Generation Cohort Study Steering Group
- Venue
- BJOG: An International Journal of Obstetrics & Gynaecology
- Publisher
- Wiley
- Published
- 2009-05-11
- Volume
- 116
- Issue
- 7
- Pages
- 943-952
- ISSN
- 1470-0328
- 1471-0528
- Cited by
- 68
- References
- 1
- Language
- en
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- Niedhammer, I., O’Mahony, D., Daly, S., Morrison, J., Kelleher, C., & the Lifeways Cross‐Generation Cohort Study Steering Group. (2009). Occupational predictors of pregnancy outcomes in Irish working women in the Lifeways cohort. BJOG: An International Journal of Obstetrics & Gynaecology. https://doi.org/10.1111/j.1471-0528.2009.02160.x
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