Increased maternal BMI is associated with an increased risk of minor complications during pregnancy with consequent cost implications
Article first published online: 4 JUN 2009
© 2009 The Authors Journal compilation © RCOG 2009 BJOG An International Journal of Obstetrics and Gynaecology
BJOG: An International Journal of Obstetrics & Gynaecology
Volume 116, Issue 11, pages 1467–1472, October 2009
How to Cite
Denison, F., Norrie, G., Graham, B., Lynch, J., Harper, N. and Reynolds, R. (2009), Increased maternal BMI is associated with an increased risk of minor complications during pregnancy with consequent cost implications. BJOG: An International Journal of Obstetrics & Gynaecology, 116: 1467–1472. doi: 10.1111/j.1471-0528.2009.02222.x
- Issue published online: 16 SEP 2009
- Article first published online: 4 JUN 2009
- Accepted 7 April 2009. Published Online 4 June 2009.
Objective To investigate the effect of maternal body mass index (BMI) on minor complications, associated additional medication use during pregnancy and the consequent cost implications.
Design Retrospective analysis of case notes.
Setting Labour wards, tertiary referral hospital, Royal Infirmary Edinburgh, UK.
Population Six hundred and fifty-one women with a singleton pregnancy over four separate time periods in 2007 and 2008.
Methods Descriptive statistics, univariate and multivariate logistic regression analysis and cost analysis using standard techniques and inflation indices.
Main outcome measures Minor complications, use of medications during pregnancy and consequent incremental costs from the perspective of the National Health Service (NHS).
Results 42.4% of women were overweight or obese (BMI ≥ 25 kg/m2). Higher BMI during the first trimester (BMI ≥ 30 kg/m2 compared with BMI < 25 kg/m2) was associated with an increased risk of minor complications including symphysis pubis dysfunction (OR 3.97; 95% CI 2.19–7.18), heartburn (OR 2.65; 95% CI 1.42–4.94) and chest infection (OR 8.71; 95% 2.20–34.44) and with drugs used to treat these complications including Gaviscon (OR 3.52; 95% CI 1.78–6.96). The mean incremental (additional) NHS costs per woman for treating minor complications increased with maternal BMI were £15.45/woman, £17.64/woman and £48.66/woman for BMI < 25 kg/m2, BMI ≥ 25 to <30 kg/m2 and BMI ≥ 30 kg/m2 respectively.
Conclusions Increased maternal BMI is associated with increased risk of developing minor complications during pregnancy; use of medications associated with treating these conditions and has significant NHS costs.