TY - JOUR
T1 - Who is at risk for prolonged and postterm pregnancy?
AU - Caughey, Aaron B.
AU - Stotland, Naomi E.
AU - Washington, A. Eugene
AU - Escobar, Gabriel J.
N1 - Funding Information:
This study was supported in part by the Agency for Healthcare Research and Quality Grant P01 HS010856 (Promoting Effective Communication and Decision Making for Diverse Populations). A.B.C. is supported by the Robert Wood Johnson Foundation as a Physician Faculty Scholar. N.E.S. is supported by the National Institute of Child Health and Human Development Grant HD01262 as a Women's Reproductive Health Research Scholar.
PY - 2009/6
Y1 - 2009/6
N2 - Objective: The objective of the study was to examine risk factors for postterm (gestational age ≥ 42 weeks) or prolonged (gestational age ≥ 41 weeks) pregnancy. Study Design: We conducted a retrospective cohort study of all term, singleton pregnancies delivered at a mature, managed care organization. The primary outcome measures were the rates of pregnancies greater than 41 or 42 weeks' gestation. Multivariable logistic regression models were used to control for potential confounding and interaction. Results: Specific risk factors for pregnancy beyond 41 weeks of gestation include obesity (adjusted odds ratio [aOR], 1.26; 95% confidence interval [CI], 1.16-1.37), nulliparity (aOR, 1.46; 95% CI 1.42-1.51), and maternal age 30-39 years (aOR, 1.06; 95% CI, 1.02-1.10) and 40 years or older (aOR, 1.07; 95% CI, 1.02-1.12). Additionally, African American, Latina, and Asian race/ethnicity were all associated with a lower risk of reaching 41 or 42 weeks of gestation. Conclusion: Our findings suggest that there may be biological differences that underlie the risk for women to progress to 41 or 42 weeks of gestation. In particular, obesity is a modifiable risk factor and could potentially be prevented with prepregnancy or interpregnancy interventions.
AB - Objective: The objective of the study was to examine risk factors for postterm (gestational age ≥ 42 weeks) or prolonged (gestational age ≥ 41 weeks) pregnancy. Study Design: We conducted a retrospective cohort study of all term, singleton pregnancies delivered at a mature, managed care organization. The primary outcome measures were the rates of pregnancies greater than 41 or 42 weeks' gestation. Multivariable logistic regression models were used to control for potential confounding and interaction. Results: Specific risk factors for pregnancy beyond 41 weeks of gestation include obesity (adjusted odds ratio [aOR], 1.26; 95% confidence interval [CI], 1.16-1.37), nulliparity (aOR, 1.46; 95% CI 1.42-1.51), and maternal age 30-39 years (aOR, 1.06; 95% CI, 1.02-1.10) and 40 years or older (aOR, 1.07; 95% CI, 1.02-1.12). Additionally, African American, Latina, and Asian race/ethnicity were all associated with a lower risk of reaching 41 or 42 weeks of gestation. Conclusion: Our findings suggest that there may be biological differences that underlie the risk for women to progress to 41 or 42 weeks of gestation. In particular, obesity is a modifiable risk factor and could potentially be prevented with prepregnancy or interpregnancy interventions.
KW - obesity
KW - postterm pregnancy
KW - race/ethnicity
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U2 - 10.1016/j.ajog.2009.02.034
DO - 10.1016/j.ajog.2009.02.034
M3 - Article
C2 - 19380120
AN - SCOPUS:67349225414
SN - 0002-9378
VL - 200
SP - 683.e1-683.e5
JO - American journal of obstetrics and gynecology
JF - American journal of obstetrics and gynecology
IS - 6
ER -