The effect of maternal fasting during Ramadan on preterm delivery: a prospective cohort study
Article first published online: 25 JUL 2012
© 2012 The Authors BJOG An International Journal of Obstetrics and Gynaecology © 2012 RCOG
BJOG: An International Journal of Obstetrics & Gynaecology
Volume 119, Issue 11, pages 1379–1386, October 2012
How to Cite
Awwad, J., Usta, I., Succar, J., Musallam, K., Ghazeeri, G. and Nassar, A. (2012), The effect of maternal fasting during Ramadan on preterm delivery: a prospective cohort study. BJOG: An International Journal of Obstetrics & Gynaecology, 119: 1379–1386. doi: 10.1111/j.1471-0528.2012.03438.x
- Issue published online: 14 SEP 2012
- Article first published online: 25 JUL 2012
- Accepted 29 May 2012. Published Online 25 July 2012.
- preterm delivery;
Please cite this paper as: Awwad J, Usta I, Succar J, Musallam K, Ghazeeri G, Nassar A. The effect of maternal fasting during Ramadan on preterm delivery: a prospective cohort study. BJOG 2012;119:1379–1386.
Objective To determine the effect of fasting during the month of Ramadan on the rate of preterm delivery (PTD).
Design A prospective cohort study of women with singleton pregnancies who elected to fast and matched controls.
Setting Four medical centres in Beirut, Lebanon.
Population Women presenting for prenatal care (20–34 weeks of gestation) during the month of Ramadan, September 2008.
Methods Data were collected prospectively. The frequency of PTD was evaluated in relation to the duration of fasting and the stage of gestation at the time of fasting.
Main outcome measures The primary endpoint was the percentage of pregnant women who had PTD, defined as delivery before 37 completed weeks of gestation.
Results A total of 468 women were approached, of whom 402 were included in the study. There were no differences in smoking history and employment. There was no difference in the proportion of women who had PTD at <37 weeks (10.4% versus 10.4%) or PTD at <32 weeks (1.5% versus 0.5%) in the Ramadan-fasted group and the controls, respectively. The PTD rate was also similar in those who fasted before or during the third trimester. The mean birthweight was lower (3094 ± 467 g versus 3202 ± 473 g, P = 0.024) and the rate of ketosis and ketonuria was higher in the Ramadan-fasted women. On multivariate stepwise logistic regression analysis, fasting was not associated with an increased risk of PTD (odds ratio 0.72; 95% confidence interval 0.34–1.54; P = 0.397). The only factor that had a significant effect on the PTD rate was body mass index (odds ratio 0.43; 95% confidence interval 0.20–0.93; P = 0.033).
Conclusions Fasting during the month of Ramadan does not seem to increase the baseline risk of preterm delivery in pregnant women regardless of the gestational age during which this practice is observed.