Abstract
Background/Purpose
Mean birth weight is a good health indicator for any population. In the recent past, there have been many reports in the West indicating that there has been an increase in the proportion of large for gestational age (LGA) babies. The objective is to describe the change in the incidence of LGA babies from 1996 to 2010 in South India and the maternal risk factors.
Methods
A rotational sampling scheme was used, i.e., the 12 months of the year were divided into 4 quarters and a month was from each quarter was selected rotationally. All deliveries for that month were considered. Only deliveries that occurred between 28 and 42 weeks of pregnancy were considered. The association between risk variables was studied using multivariable logistic regression.
Results
There were 35,718 deliveries that occurred during these 15-year-study period in the gestational age 28–42 weeks were registered through the outpatient clinics. The incidence of LGA was 9.4 % that has mostly remained at the same level. The incidence of LGA in mothers with gestational diabetes was 6.7, 3 and 17.6 % in overweight, obese and gestational l diabetes mothers. Overweight, obesity in pregnant women and cesarean section were significant risk factors.
Conclusion
Unlike in Western countries, where the incidence of LGA babies has spiraled upward, has remained nearly at the same level over one and a half decades, in South India. The risk factors for giving birth to LGA babies in South India were similar to other studies.
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Acknowledgments
The authors acknowledge the support and cooperation extended by the Heads of Obstetrics and Gynecology Department Units 3 and 5 of CMC for sharing their data with us. I sincerely thank and acknowledge the help rendered by Dr. Shuba Kumar (Social Scientist, SAMARTH, NGO, Chennai, India) in proof reading the manuscript. All the contributions by the authors to the research work were voluntary and not funded by any organization. The data were collected by the Clinical Data Management Centre, the Department of Biostatistics, Christian Medical College, Vellore.
Authors’ contributions
LJ was involved in phrasing the research questions. He was involved in the verification of analytic results, which were done by BY and SV. He was involved in drafting the methods section. He also participated in the interpretation of results section along with RJ. BY was Involved in data abstraction supervision, and quality control assurance. He was also involved in data analyses and interpretation. He was further involved in the literature review and drafting the Background section. VS was involved in developing data entry system in EPIINFO and involved in Data Validation part. He was also involved in data analyses and verified the analytic codes. RV was involved in drafting the Background section along with BY. She was involved in the literature review and guiding the Biostatisticians in analyses. She was also involved in writing the Discussion section. RJ has provided leadership in phrasing the research question, was involved in designing the methods of data abstraction and verified the results, and drafted the Discussion section, reviewed, and approved the overall manuscript.
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Dr. Lakshmanan Jeyaseelan (LJ), Bijesh Yadav (BY), Veerasamy Silambarasan (VS), Dr. Reeta Vijayaaselvi (RV) and Dr. Ruby Jose (RJ) declare that they have no conflict of interests.
Ethical Standards
The study was approved by the Institutional Review Board of Christian Medical College, Vellore [IRB Min. No. 7109 dated 10.03.2010].
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The Institutional Review Board of Christian Medical College Vellore provided consent for this research paper as recorded in the following minutes (IRB Min. No. 7109 dated 10.03.2010).
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Lakshmanan Jeyaseelan is a Professor, Bijesh Yadav is a Senior Demonstrator, Veerasamy Silambarasan is a Research Fellow in the Department of Biostatistics, Reeta Vijayaselvi is a Assistant Professor, Ruby Jose is a Professor and Head in the Obstetrics and Gynaecology Unit IV, Christian Medical College, Vellore, India.
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The dataset will not be available for publishing online since further research has been planned.
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Jeyaseelan, L., Yadav, B., Silambarasan, V. et al. Large for Gestational Age Births Among South Indian Women: Temporal Trend and Risk Factors from 1996 to 2010. J Obstet Gynecol India 66 (Suppl 1), 42–50 (2016). https://doi.org/10.1007/s13224-015-0765-y
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DOI: https://doi.org/10.1007/s13224-015-0765-y