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Original ArticleOpen Access
Risk Factors of Ectopic Pregnancy
Bunyavejchevin S 
,
Havanond P ,
Wisawasukmongchol. W
,
Havanond P ,
Wisawasukmongchol. W Objectives
: To assess the risk factors of ectopic pregnancy in Thai women.
Setting
: Department of Obstetrics and Gynaecology, Faculty of Medicine, Chulalongkom
University.
Design:
Case controlled study.
Material and Method:
From 1999 to 2000, 208 cases of ectopic pregnancy and 781 controls
(postpartum women) were included in the study. The women were interviewed by trained research
interviewers using a standardized questionnaire. Detailed information regarding age at first intercourse,
number of sexual partners, history of changing partners within 6 months, previous obstetric history,
history of spontaneous and criminal abortion, history of pelvic inflammatory disease, smoking, history
of endometriosis and history of previous ectopic pregnancy was collected.
Results
:By multivariate analysis, 5 variables remained as strong and independent risk fac-
tors for ectopic pregnancy : the number of sexual
partners~
2 (OR= 3.02, 95% CI (1.75-5.23), vaginal
delivery~
1 (OR= 0.005, 95% CI (0.002-0.0015), history of pelvic inflamatory disease (OR= 3.17,
95% CI (1.40-7.19), smoking (OR= 2.49, 95% CI (1.36-4.55), infertility (OR= 2.74, 95% CI (1.35-
5.54)).
Conclusion
: Problems of multiple sexual partners, pelvic inflammatory disease, smoking
and infertility were the main risk factors of ectopic pregnancy in Thai women.
Key word
: Risk Factors, Ectopic Pregnancy
: To assess the risk factors of ectopic pregnancy in Thai women.
Setting
: Department of Obstetrics and Gynaecology, Faculty of Medicine, Chulalongkom
University.
Design:
Case controlled study.
Material and Method:
From 1999 to 2000, 208 cases of ectopic pregnancy and 781 controls
(postpartum women) were included in the study. The women were interviewed by trained research
interviewers using a standardized questionnaire. Detailed information regarding age at first intercourse,
number of sexual partners, history of changing partners within 6 months, previous obstetric history,
history of spontaneous and criminal abortion, history of pelvic inflammatory disease, smoking, history
of endometriosis and history of previous ectopic pregnancy was collected.
Results
:By multivariate analysis, 5 variables remained as strong and independent risk fac-
tors for ectopic pregnancy : the number of sexual
partners~
2 (OR= 3.02, 95% CI (1.75-5.23), vaginal
delivery~
1 (OR= 0.005, 95% CI (0.002-0.0015), history of pelvic inflamatory disease (OR= 3.17,
95% CI (1.40-7.19), smoking (OR= 2.49, 95% CI (1.36-4.55), infertility (OR= 2.74, 95% CI (1.35-
5.54)).
Conclusion
: Problems of multiple sexual partners, pelvic inflammatory disease, smoking
and infertility were the main risk factors of ectopic pregnancy in Thai women.
Key word
: Risk Factors, Ectopic Pregnancy
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