American journal of industrial medicine · 2010
Physical activity, physical exertion, and miscarriage risk in women textile workers in Shanghai, China.
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Wong Eva Y, Ray Ray, Gao Dao L, Wernli Karen J, Li Wenjin, Fitzgibbons E Dawn, Camp Janice E, Heagerty Patrick J, De Roos Anneclaire J, Holt Victoria L, Thomas David B, Checkoway Harvey
Аннотация
BACKGROUND: Strenuous occupational physical activity and physical demands may be risk factors for adverse reproductive outcomes.
METHODS: A retrospective study in the Shanghai, China textile industry study collected women's self-reported reproductive history. Occupational physical activity assessment linked complete work history data to an industry-specific job-exposure matrix. Odds ratios (OR) and 95% confidence intervals (CI) were estimated by multivariate logistic regression for the first pregnancy outcome and utilized generalized estimating equations to consider all pregnancies per woman.
RESULTS: Compared with women employed in sedentary jobs, a reduced risk of miscarriage was found for women working in jobs with either light (OR 0.18, 95% CI: 0.07, 0.50) or medium (OR 0.24, 95% CI: 0.08, 0.66) physical activity during the first pregnancy and over all pregnancies (light OR 0.32, 95% CI: 0.17, 0.61; medium OR 0.43, 95% CI: 0.23, 0.80). Frequent crouching was associated with elevated risk (OR 1.82, 95% CI: 1.14, 2.93; all pregnancies per woman).
CONCLUSIONS: Light/medium occupational physical activity may have reduced miscarriage risk, while specific occupational characteristics such as crouching may have increased risk in this cohort.
METHODS: A retrospective study in the Shanghai, China textile industry study collected women's self-reported reproductive history. Occupational physical activity assessment linked complete work history data to an industry-specific job-exposure matrix. Odds ratios (OR) and 95% confidence intervals (CI) were estimated by multivariate logistic regression for the first pregnancy outcome and utilized generalized estimating equations to consider all pregnancies per woman.
RESULTS: Compared with women employed in sedentary jobs, a reduced risk of miscarriage was found for women working in jobs with either light (OR 0.18, 95% CI: 0.07, 0.50) or medium (OR 0.24, 95% CI: 0.08, 0.66) physical activity during the first pregnancy and over all pregnancies (light OR 0.32, 95% CI: 0.17, 0.61; medium OR 0.43, 95% CI: 0.23, 0.80). Frequent crouching was associated with elevated risk (OR 1.82, 95% CI: 1.14, 2.93; all pregnancies per woman).
CONCLUSIONS: Light/medium occupational physical activity may have reduced miscarriage risk, while specific occupational characteristics such as crouching may have increased risk in this cohort.
Предметные рубрики MeSH
Abortion, SpontaneousAdolescentAdultChinaConfidence IntervalsFemaleHumansLikelihood FunctionsLogistic ModelsMotor ActivityMultivariate AnalysisOccupational DiseasesOccupational ExposureOdds RatioPhysical ExertionPregnancyPregnancy ComplicationsPregnancy OutcomeRetrospective StudiesRisk AssessmentRisk FactorsTextilesYoung Adult