[Risk factors for congenital anal atresia].
OBJECTIVE
To investigate the risk factors for the development of congenital anal atresia in neonates.


METHODS
A total of 70 neonates who were admitted to 17 hospitals in Foshan, China from January 2011 to December 2014 were enrolled as case group, and another 70 neonates who were hospitalized during the same period and had no anal atresia or other severe deformities were enrolled as control group. Univariate and multivariate logistic regression analyses were used to investigate the risk factors for the development of congenital anal atresia.


RESULTS
The univariate analysis revealed that the age of mothers, presence of oral administration of folic acid, infection during early pregnancy, and polyhydramnios, and sex of neonates showed significant differences between the case and control groups (P<0.05). The multivariate logistic regression analysis revealed that infection during early pregnancy (OR=18.776) and male neonates (OR=9.304) were risk factors for congenital anal atresia, and oral administration of folic acid during early pregnancy was the protective factor (OR=0.086).


CONCLUSIONS
Infection during early pregnancy is the risk factor for congenital anal atresia, and male neonates are more likely to develop congenital anal atresia than female neonates. Supplementation of folic acid during early pregnancy can reduce the risk of congenital anal atresia.
Department of Neonatology, Foshan Maternal and Child Health Care Hospital, Foshan, Guangdong 528000, China. fsgaopm666@126.com.
Xiao-Yan
XY
Gao
Ping-Ming
PM
Gao
Shi-Guang
SG
Wu
Zhi-Guang
ZG
Mai
Jie
J
Zhou
Run-Zhong
RZ
Huang
Shui-Tang
ST
Zhang
Huan-Qiong
HQ
Zhong
You-Ming
YM
Liao
Ai-Min
AM
Zhang
Tie-Jun
TJ
Liao
Wei-Zhong
WZ
Guo
Xue-Jun
XJ
Pan
Min-Yi
MY
Pan
Hou-Lan
HL
Xiao
Jin-Lin
JL
Zhu
Long-Yao
LY
Wu
Zu-Lin
ZL
Huang
D001006:Anus, Imperforate / Q000209:etiology*; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D016015:Logistic Models; D008297:Male; D011247:Pregnancy; D012307:Risk Factors