Effect of Older Maternal Age on the Risk of Spontaneous Preterm Labor: A Population-Based Study

To determine if older maternal age (35 years and older) at first birth was an independent risk factor for spontaneous preterm labor, we conducted a retrospective population-based cohort study. Using provincial perinatal data, we developed separate risk models for low- and high-risk women using multi...

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Bibliographic Details
Published in:Health care for women international 2009-08, Vol.30 (8), p.670-689
Main Authors: Mcintyre, Safina Hassan, Newburn-Cook, Christine V., O'Brien, Beverley, Demianczuk, Nestor N.
Format: Article
Language:English
Subjects:
Adult
Age Distribution
Alberta - epidemiology
Cohort Studies
Female
Gestational Age
Humans
Infant, Newborn
Infant, Premature
Logistic Models
Maternal Age
Middle Aged
Nursing
Obstetric Labor, Premature - epidemiology
Parity
Pregnancy
Pregnancy Outcome - epidemiology
Pregnancy, High-Risk
Risk Factors
Women's Health
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Summary:To determine if older maternal age (35 years and older) at first birth was an independent risk factor for spontaneous preterm labor, we conducted a retrospective population-based cohort study. Using provincial perinatal data, we developed separate risk models for low- and high-risk women using multivariate logistic regression. We found that older maternal age exerted a direct and independent effect on spontaneous preterm labor for both nulliparous women with no preexisting chronic illnesses or pregnancy complications (low-risk) and nulliparous women who did not have any preexisting chronic illnesses, but developed one or more pregnancy complications (high-risk).
ISSN:0739-9332
1096-4665
DOI:10.1080/07399330802596473