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. Author manuscript; available in PMC: 2014 Nov 21.
Published in final edited form as: Cochrane Database Syst Rev. 2009 Jul 8;(3):CD007235. doi: 10.1002/14651858.CD007235.pub2

Comparison 3.

TVU CL knowledge versus no knowledge (twins)

Outcome or subgroup title No. of studies No. of participants Statistical method Effect size
1 Preterm birth < 36 weeks 1 125 Risk Ratio (M-H, Fixed, 95% CI) 1.27 [0.85, 1.90]
2 Preterm birth < 34 weeks 1 125 Risk Ratio (M-H, Fixed, 95% CI) 0.62 [0.30, 1.25]
3 Preterm birth < 32 weeks 1 125 Risk Ratio (M-H, Fixed, 95% CI) 0.56 [0.17, 1.83]
4 Preterm birth < 30 weeks 1 125 Risk Ratio (M-H, Fixed, 95% CI) 0.20 [0.02, 1.64]
5 Gestational age at delivery 1 125 Mean Difference (IV, Fixed, 95% CI) 0.20 [−0.74, 1.14]
6 Birth weight 1 125 Mean Difference (IV, Fixed, 95% CI) 155.0 [−57.61, 367.61]
7 Maternal hospitalization (PTL) 1 125 Risk Ratio (M-H, Fixed, 95% CI) 1.29 [0.75, 2.23]
8 Tocolysis 1 125 Risk Ratio (M-H, Fixed, 95% CI) 1.34 [0.74, 2.42]
9 Steroids for fetal lung maturity 1 125 Risk Ratio (M-H, Fixed, 95% CI) 0.79 [0.49, 1.26]