Risk factors for placenta previa in an Asian population

Abstract Objective To identify the risk factors for placenta previa in an Asian population. Methods This retrospective cohort study involved Taiwanese women delivered between July 1990 and December 2003 at Chang Gung Memorial Hospital, Taipei, Taiwan. Pregnancies complicated by multiple gestation an...

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Bibliographic Details
Published in:International journal of gynecology and obstetrics 2007-04, Vol.97 (1), p.26-30
Main Authors: Hung, Tai-Ho, Hsieh, Ching-Chang, Hsu, Jenn-Jeih, Chiu, Tsung-Hong, Lo, Liang-Ming, Hsieh, T'sang-T'ang
Format: Article
Language:English
Subjects:
Adult
Biological and medical sciences
Confounding Factors (Epidemiology)
Delivery. Postpartum. Lactation
Diseases of mother, fetus and pregnancy
Disorders
Female
Gynecology. Andrology. Obstetrics
Humans
Logistic Models
Medical sciences
Obstetrics and Gynecology
Placenta
Placenta previa
Placenta Previa - epidemiology
Pregnancy
Pregnancy Outcome
Pregnancy. Fetus. Placenta
Retrospective Studies
Risk Factors
Taiwan - epidemiology
Technology-assisted conception
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Summary:Abstract Objective To identify the risk factors for placenta previa in an Asian population. Methods This retrospective cohort study involved Taiwanese women delivered between July 1990 and December 2003 at Chang Gung Memorial Hospital, Taipei, Taiwan. Pregnancies complicated by multiple gestation and fetal anomalies were excluded. Results There were 457 cases of placenta previa (1.2%) among the 37,702 pregnancies analyzed. Risk factors for placenta previa included a prior preterm birth (OR, 6.6; 95% confidence interval [CI], 4.1–10.6); technology-assisted conception (OR, 4.8; 95% CI, 2.9–7.8); smoking (OR, 3.3; 95% CI, 1.2–9.1) or working (OR, 3.8; 95% CI, 2.8–5.3) during pregnancy; maternal age of, or greater than 35 years (OR, 2.0 to 2.2; 95% CI, 1.3–3.7); and previous induced abortions (OR, 1.3–3.0; 95% CI, 1.1–7.1). Conclusion The risk factors for placenta previa were found to be the same for Asian women as those previously recorded for American and European women, but additional factors were detected.
ISSN:0020-7292
1879-3479
DOI:10.1016/j.ijgo.2006.12.006