title: Epidemiological investigation of risk factors of the pregnant women with early spontaneous abortion in Beijing.
abstract: OBJECTIVE
  To determine the risk factors of the pregnant women with early spontaneous abortion in Beijing.
  
  
  METHODS
  A total of 34,417 cases of pregnant women were participated in the survey from January 2000 to December 2013. A questionnaire was informed to each woman. The content of questionnaire includes four parts: general condition, obstetrical history, past history and family history, and living environment and habits. The mental condition was evaluated with Self-Rating Anxiety Scale (SAS) and Self-Rating Depression Scale (SDS).
  
  
  RESULTS
  A total of 32,296 questionnaires were collected. The spontaneous abortion rate in the total sample was 3.0%. There was no significant difference between the normal pregnancy group and spontaneous abortion group in terms of general condition, obstetrical and past history (P>0.05). Significant differences between the two groups were found in terms of decoration during pregnancy, keeping pets, near mobile communication base station within 100 m around the residence, drinking during pregnancy, having a cold during pregnancy and SAS (P<0.05). Having a cold during pregnancy, decoration during pregnancy, near mobile communication base station within 100 m around the residence, keeping pets and high SAS were determined the independent risk factors of spontaneous abortion by Logistic regression analysis.
  
  
  CONCLUSIONS
  Having a cold during pregnancy, decoration, keeping pets, near mobile communication base station within 100 m around the residence and high SAS are the independent risk factors of spontaneous abortion in Beijing.
authors: Department of Reproduction, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, 100026, China.
authors: Li-Ying
authors: LY
authors: Zhou
authors: Department of Reproduction, Peking University Third Hospital, Beijing, 100191, China.
authors: Hong-Xia
authors: HX
authors: Zhang
authors: Department of Reproduction, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, 100026, China.
authors: Yong-Lian
authors: YL
authors: Lan
authors: Department of Reproduction, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, 100026, China.
authors: Ying
authors: Y
authors: Li
authors: Department of Reproduction, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, 100026, China.
authors: Yu
authors: Y
authors: Liang
authors: Department of Reproduction, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, 100026, China.
authors: Lan
authors: L
authors: Yu
authors: Department of Reproduction, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, 100026, China.
authors: Yan-Min
authors: YM
authors: Ma
authors: Chan-Wei
authors: CW
authors: Jia
authors: Department of Reproduction, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, 100026, China. lydia995@126.com.
authors: Shu-Yu
authors: SY
authors: Wang
mesh_terms: D000022:Abortion, Spontaneous / Q000453:epidemiology* / Q000523:psychology; D000293:Adolescent; D000068476:Beijing / Q000453:epidemiology; D005260:Female; D006184:Habits; D006801:Humans; D008603:Mental Health; D011247:Pregnancy; D012372:ROC Curve; D012307:Risk Factors; D011795:Surveys and Questionnaires
keywords: epidemiological; habit; living environment; risk factors; spontaneous abortion