Key result
Pregnancy beyond 30 weeks is linked to a ~196% greater likelihood of left-tilt sleeping versus controls.
Why the study?
The sleeping positions adopted by pregnant women beyond 30 weeks gestation and their difference from nonpregnant women were not well characterized.
Do pregnant women >30 weeks gestation adopt different sleeping positions compared to nonpregnant controls?
Population
52 pregnant women beyond 30 weeks gestation and 31 age-matched nonpregnant controls
Comparison
Pregnant women vs nonpregnant control subjects
Design
Observational cross-sectional study
Authors
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Supports predominant left-tilt adoption in late pregnancy; hypothesis-generating for impact on aortocaval compression outcomes.
Observational (n=83)
Do pregnant women >30 weeks gestation adopt different sleeping positions compared to nonpregnant controls?
Absolute Event Rate: 77% vs 26%
p-value: p=<0.001
Pregnant women >30 weeks gestation predominantly adopt a left-tilt sleeping position, which reduces the likelihood of aortocaval compression syndrome.
Mills et al. (1994) conducted an observational in Pregnancy (n=83). Pregnancy (>30 weeks gestation) vs. Nonpregnant control subjects was evaluated on Sleeping positions adopted (left tilt) (p=<0.001). Pregnant women beyond 30 weeks gestation significantly differed in sleeping positions compared to nonpregnant controls, with 77% adopting a left tilt versus 26% in controls (p < 0.001).
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