Table 4

Mean differences in cluster-level summary statistics of women’s reported outcomes in phase 2
Post-natal outcomes Mean differencea (95% CI) P-valueb
10-12 days Pain walking or sitting in previous 24 hours, % 0.7% (−10.1% to 11.4%) 0.89
Total walking and sitting pain scores over the previous 24 hours 0.10 (−0.27 to 0.46) 0.56
Required suture removal, %c 2.2% (0% to 10.0%) 0.03
Took pain relief in previous 24 hours, % 7.6% (−4.3% to 19.5%) 0.19
Still breastfeeding, % 3.1% (−10.4% to 16.6%) 0.62
Perineal wound infection since birth, % 4.2% (0.4% to 8.0%) 0.03
3 months Edinburgh Postnatal Depression Score 13+, % −1.1% (−8.1% to 6.0%) 0.75
Resumed intercourse after 9 weeks or more, % −3.1% (−15.9% to 9.7%) 0.60
Poor or moderately poor perineal healing, % 0.1% (−4.9% to 5.2%) 0.95

aMean difference = mean of B clusters – mean of A clusters. Positive mean differences indicate that values were on average higher in the group B (late intervention) clusters.

bPaired t-test.

cHighly skewed distribution, so median (95% CI) and P-value from Wilcoxon test are presented.

Ismail et al.

Ismail et al. BMC Medicine 2013 11:209   doi:10.1186/1741-7015-11-209

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