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The effect of maternal work on fetal growth and duration of pregnancy: a prospective study
Author(s) -
LAUNER LENORE J.,
VILLAR JOSE,
KESTLER EDGAR,
ONIS MERCEDES
Publication year - 1990
Publication title -
bjog: an international journal of obstetrics and gynaecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.157
H-Index - 164
eISSN - 1471-0528
pISSN - 1470-0328
DOI - 10.1111/j.1471-0528.1990.tb01718.x
Subject(s) - odds ratio , medicine , confidence interval , small for gestational age , exertion , obstetrics , pregnancy , sitting , odds , gestational age , demography , pediatrics , logistic regression , physical therapy , pathology , sociology , biology , genetics
Summary. The effect on birth outcome of work requiring different degrees of physical exertion was examined among 15 786 pregnant women who were followed through the Guatemalan Social Security Institute's hospital. Work inside and outside the home was ascertained through a questionnaire administered to each woman before delivery. Odds ratios were adjusted for household income, maternal height and age, and birthweight of previous infant. Women with three or more children and no household help were at increased risk for small‐for‐gestational‐age (SGA) births compared with women with family (odds ratio (OR) 1.79; 95% confidence interval (CI) 1.31, 2.47) or hired help (OR 2.0; 95% CI 1‐16 to 3‐33). Compared with office work, manual work increased the risk for an SGA (OR 1.32 95% CI 1.12 to 1.56) and SGA/preterm birth (OR 2.56; 95% CI 1.10 to 5.96). Work in a standing compared with sitting position significantly increased the risk for a preterm birth (OR l.56; 95% CI l.04 to 2.60). There was a significant positive trend in frequency of SGA and SGA/preterm birth with an increase in the physical demands at work, as measured by an activity score. These data suggest that interventions to reduce physical exertion among pregnant women could improve birth outcome.