Robson, Stephen J., Vally, Hassan, Mohamed, Abdel-Latif, Yu, Maggie, and Westrupp, Elizabeth M. (2017) Perinatal and social factors predicting caesarean birth in a 2004 Australian birth cohort. Women and Birth, 30 (6). pp. 506-510.

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Abstract

Background

The proportion of babies born by caesarean section in Australia has almost doubled over the last 25 years. Factors known to contribute to caesarean such as higher maternal age, mothers being overweight or obese, or having had a previous caesarean do not completely account for the increased rate and it is clear that other influences exist. Aim

To identify previously unsuspected risk factors associated with caesarean using nationally-representative data from the Longitudinal Study of Australian Children. Methods

Data were from the birth cohort, a long-term prospective study of approximately 5000 children that includes richly-detailed data regarding maternal health and exposures during pregnancy. Logistic regression was used to examine the contribution of a wide range of pregnancy, birth and social factors to caesarean. Findings

28% of 4862 mothers were delivered by caesarean. The final adjusted analyses revealed that use of diabetes medication (OR = 3.1, 95% CI = 1.7–5.5, p < 0.001) and maternal mental health problems during pregnancy (OR = 1.3, CI = 1.1–1.6, p = 0.003) were associated with increased odds of caesarean. Young maternal age (OR = 0.6, CI = 0.5–0.7, p < 0.001), having two or more children (OR = 0.7, CI = 0.6–0.9, p < 0.001), and fathers having an unskilled occupation (OR = 0.7, CI = 0.6–1.0, p = 0.036) were associated with reduced odds of caesarean. Conclusion

Our findings raise the prospect that the effect of additional screening and support for maternal mental health on caesarean rate should be subject of prospective study.

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