Effects of Pre-Pregnancy Body Mass Index and Gestational Weight Gain on Low Birth Weight in Omani Infants A case-control study
Journal Title: Sultan Qaboos University Medical Journal - Year 2013, Vol 13, Issue 3
Abstract
Objectives: Tis study aimed to investigate the association between pre-pregnancy maternal body mass index (BMI), gestational weight gain and low birth weight (LBW) in babies born to a sample population of Omani women. Methods: A case-control study was carried out among deliveries registered between 1st May 2010 and 30th April 2011 at Sultan Qaboos University Hospital, Muscat, Oman. A case was defned as a woman who delivered a low birth weight baby (<2,500 g); a control was a woman delivering a baby weighing between 2,500 and 4,000 g. A random selection of 150 cases and 300 controls was carried out using the hospital information system. Maternal, pre-natal, and delivery data were extracted from the mothers’ follow-up cards. Bivariate and multivariate logistic regression analyses were executed to examine the association between pre-pregnancy maternal BMI and LBW. Results: Te percentage of underweight mothers (BMI <18.5) was higher among the cases compared to the controls (17.3% versus 6%; P <0.001). Te proportion of mothers with less-than-recommended weight gain was also higher among the cases compared to the controls (57.7% versus 33%; P <0.001). After adjustment for potential confounders, infants of underweight mothers had more than twice the risk of LBW compared to those of mothers with normal weight (odds ratio = 2.27; 95% confdence interval 1.09–4.71). Conclusion: Underweight Omani women as well as women with less-than-recommended gestational weight gain were at higher risk of delivering LBW babies. Maternal health promotion programmes should be directed towards improving mothers’ nutrition before and during pregnancies.
Authors and Affiliations
Mustafa Al-Hinai| Department of Family Medicine & Public Health, Sultan Qaboos University Hospital, Majid Al-Muqbali| Department of Obstetrics & Gynaecology, College of Medicine & Health Sciences, Sultan Qaboos University, Muscat, Oman, Aisha Al-Moqbali| Department of Obstetrics & Gynaecology, College of Medicine & Health Sciences, Sultan Qaboos University, Muscat, Oman, Vaidyanathan Gowri| Department of Obstetrics & Gynaecology, College of Medicine & Health Sciences, Sultan Qaboos University, Muscat, Oman, Abdullah Al-Maniri| Department of 1Family Medicine & Public Health, Sultan Qaboos University Hospital
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