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. 2015 Sep 30;2015(9):CD001139. doi: 10.1002/14651858.CD001139.pub4

Comparison 2. Low‐back pain: water gymnastics + usual prenatal care versus usual prenatal care.

Outcome or subgroup title No. of studies No. of participants Statistical method Effect size
1 Number of women taking sick leave because of low‐back pain after 32 weeks' gestation 1 241 Risk Ratio (M‐H, Fixed, 95% CI) 0.40 [0.17, 0.92]