Distribution of Birth Weight for Gestational Age in Japanese Infants Delivered by Cesarean Section

Content Provider	Semantic Scholar
Author	Uehara, Ritei Miura, Fumihiro Itabashi, Kazuo Fujimura, Masanori Nakamura, Yosikazu
Copyright Year	2011
Abstract	BACKGROUND Neonatal anthropometric charts of the distribution of measurements, mainly birth weight, taken at different gestational ages are widely used by obstetricians and pediatricians. However, the relationship between delivery mode and neonatal anthropometric data has not been investigated in Japan or other countries. METHODS The subjects were selected from the registration database of the Japan Society of Obstetrics and Gynecology (2003-2005). Tenth centile, median, and 90th centile of birth weight by sex, birth order, and delivery mode were observed by gestational age from 22 to 42 weeks among eligible singleton births. RESULTS After excluding 248 outliers and 5243 births that did not satisfy the inclusion criteria, 144,980 births were included in the analysis. The distribution of 10th centile curves was skewed toward lower birth weights during the preterm period among both first live births and second and later live births delivered by cesarean section. More than 40% of both male and female live births were delivered by cesarean section at 37 weeks or earlier. CONCLUSIONS The large proportion of cesarean sections influenced the skewness of the birth weight distribution in the preterm period.
Starting Page	217
Ending Page	222
Page Count	6
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://pdfs.semanticscholar.org/8408/70a7dc6510260b0ce02a3c137033f28fdf75.pdf
PubMed reference number	21478642
Volume Number	21
Journal	Journal of epidemiology
Language	English
Access Restriction	Open
Subject Keyword	Birth Injuries Cesarean section Charts (publication) Gestational Age Gynecology Low Birth Weight Infant
Content Type	Text
Resource Type	Article