Passive smoking and preterm birth in urban China.
Am J Epidemiol
; 180(1): 94-102, 2014 Jul 01.
Article
en En
| MEDLINE
| ID: mdl-24838804
ABSTRACT
Studies investigating the relationship between maternal passive smoking and the risk of preterm birth have reached inconsistent conclusions. A birth cohort study that included 10,095 nonsmoking women who delivered a singleton live birth was carried out in Lanzhou, China, between 2010 and 2012. Exposure to passive smoking during pregnancy was associated with an increased risk of very preterm birth (<32 completed weeks of gestation; odds ratio = 1.98, 95% confidence interval 1.41, 2.76) but not moderate preterm birth (32-36 completed weeks of gestation; odds ratio = 0.98, 95% confidence interval 0.81, 1.19). Risk of very preterm birth increased with the duration of exposure (P for trend = 0.0014). There was no variability in exposures by trimester. The associations were consistent for both medically indicated and spontaneous preterm births. Overall, our findings support a positive association between passive smoking and the risk of very preterm birth.
Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Contaminación por Humo de Tabaco
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Nacimiento Prematuro
Tipo de estudio:
Etiology_studies
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Observational_studies
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Risk_factors_studies
Límite:
Adolescent
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Adult
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Female
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Humans
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Male
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Newborn
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Pregnancy
País/Región como asunto:
Asia
Idioma:
En
Revista:
Am J Epidemiol
Año:
2014
Tipo del documento:
Article