caa a22 4500 445310898 CHVBK 20180317142629.0 cr unu---uuuuu 170323e20111101xx s 000 0 eng 10.1007/s00404-010-1812-7 doi (NATIONALLICENCE)springer-10.1007/s00404-010-1812-7 The effect of prepregnancy body mass index on singleton cesarean delivery among term nulliparous women in Japanese population [Elektronische Daten] [Izumi Chihara, Ritei Uehara, Kazuhiko Kotani, Atsuko Sadakane, Yasuko Aoyama, Satoshi Tsuboi, Ryusuke Ae, Tsogzolbaatar Enkh-Oyun, Yosikazu Nakamura] Purpose: Overweight or obesity is a known risk factor for cesarean delivery although there is minimal data among Japanese women. The aim of the study was to examine the effect of prepregnancy body mass index (BMI) on singleton cesarean delivery among term nulliparous women using a national sample from the Human Milk Survey. Methods: Data from the Human Milk Survey between 1998 and 2008 were used for the secondary analysis. Women were categorized as underweight (BMI<18.5 kg/m2), normal weight (18.5≤BMI<25.0), or overweight (BMI≥25.0) based on their prepregnancy BMI. The association between maternal prepregnancy BMI and cesarean delivery was assessed using logistic regression models. Results: A total of 915 women were included in the analysis. The proportion of cesarean section was 10.1%. Overall, 17.1% of the women were underweight while 6.0% were overweight. After adjusting for maternal age, smoking status, pregnancy complications, and infant birthweight, overweight women were 2.7 times more likely to have a cesarean delivery compared to normal weight women (adjusted odds ratio [adjusted OR]=2.7, 95% confidence interval [CI]=1.4-5.4), and underweight women were half as likely to have a cesarean delivery compared to normal weight women (adjusted OR=0.5, 95% CI=0.2-1.1). Conclusions: Being overweight before pregnancy more than doubled the risk of cesarean delivery independent of age, smoking, pregnancy complications, and infant birthweight among term nulliparous women. Overweight Japanese women should be advised to achieve normal prepregnancy BMI in their preconception period to prevent cesarean delivery. Springer-Verlag, 2010 Epidemiology nationallicence Cesarean delivery nationallicence Prepregnancy BMI nationallicence Maternal overweight nationallicence Pregnancy nationallicence Japanese nationallicence Chihara Izumi Department of Public Health, Jichi Medical University, 3311-1 Yakushiji, 329-0498, Shimotsuke City, Tochigi, Japan aut Uehara Ritei Department of Public Health, Jichi Medical University, 3311-1 Yakushiji, 329-0498, Shimotsuke City, Tochigi, Japan aut Kotani Kazuhiko Department of Public Health, Jichi Medical University, 3311-1 Yakushiji, 329-0498, Shimotsuke City, Tochigi, Japan aut Sadakane Atsuko Department of Public Health, Jichi Medical University, 3311-1 Yakushiji, 329-0498, Shimotsuke City, Tochigi, Japan aut Aoyama Yasuko Department of Public Health, Jichi Medical University, 3311-1 Yakushiji, 329-0498, Shimotsuke City, Tochigi, Japan aut Tsuboi Satoshi Department of Public Health, Jichi Medical University, 3311-1 Yakushiji, 329-0498, Shimotsuke City, Tochigi, Japan aut Ae Ryusuke Department of Public Health, Jichi Medical University, 3311-1 Yakushiji, 329-0498, Shimotsuke City, Tochigi, Japan aut Enkh-Oyun Tsogzolbaatar Department of Public Health, Jichi Medical University, 3311-1 Yakushiji, 329-0498, Shimotsuke City, Tochigi, Japan aut Nakamura Yosikazu Department of Public Health, Jichi Medical University, 3311-1 Yakushiji, 329-0498, Shimotsuke City, Tochigi, Japan aut Archives of Gynecology and Obstetrics Springer-Verlag 284/5(2011-11-01), 1117-1122 0932-0067 284:5<1117 2011 284 404 https://doi.org/10.1007/s00404-010-1812-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00404-010-1812-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chihara Izumi Department of Public Health, Jichi Medical University, 3311-1 Yakushiji, 329-0498, Shimotsuke City, Tochigi, Japan aut NATIONALLICENCE 700 1- Uehara Ritei Department of Public Health, Jichi Medical University, 3311-1 Yakushiji, 329-0498, Shimotsuke City, Tochigi, Japan aut NATIONALLICENCE 700 1- Kotani Kazuhiko Department of Public Health, Jichi Medical University, 3311-1 Yakushiji, 329-0498, Shimotsuke City, Tochigi, Japan aut NATIONALLICENCE 700 1- Sadakane Atsuko Department of Public Health, Jichi Medical University, 3311-1 Yakushiji, 329-0498, Shimotsuke City, Tochigi, Japan aut NATIONALLICENCE 700 1- Aoyama Yasuko Department of Public Health, Jichi Medical University, 3311-1 Yakushiji, 329-0498, Shimotsuke City, Tochigi, Japan aut NATIONALLICENCE 700 1- Tsuboi Satoshi Department of Public Health, Jichi Medical University, 3311-1 Yakushiji, 329-0498, Shimotsuke City, Tochigi, Japan aut NATIONALLICENCE 700 1- Ae Ryusuke Department of Public Health, Jichi Medical University, 3311-1 Yakushiji, 329-0498, Shimotsuke City, Tochigi, Japan aut NATIONALLICENCE 700 1- Enkh-Oyun Tsogzolbaatar Department of Public Health, Jichi Medical University, 3311-1 Yakushiji, 329-0498, Shimotsuke City, Tochigi, Japan aut NATIONALLICENCE 700 1- Nakamura Yosikazu Department of Public Health, Jichi Medical University, 3311-1 Yakushiji, 329-0498, Shimotsuke City, Tochigi, Japan aut NATIONALLICENCE 773 0- Archives of Gynecology and Obstetrics Springer-Verlag 284/5(2011-11-01), 1117-1122 0932-0067 284:5<1117 2011 284 404 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer