Table 1

Demographic and obstetric characteristics from phase 2 entry details in group A and group B clusters
Group A clusters, n =532 Group B clusters n = 922
Maternal age in years, mean ± SD 28.9 ± 5.8 29.1 ± 5.7
Multiparity, % (n) 37.0% (194) 35.8% (330)
White ethnic background, % (n) 89.3% (475) 87.2% (804)
Type of delivery, % (n)
 Spontaneous vaginal 75.8% (403) 74.4% (690)
 Forceps 13.9% (74) 12.9% (120)
 Ventouse/suction cup 9.8% (52) 12.0% (111)
 Breech 0.6% (3) 0.6% (6)
 Other 0% (0) 0% (0)
Perineal trauma at delivery % (n)
 None 0.8% (4) 0.9% (8)
 First-degree 1.5% (8) 2.0% (18)
 Second-degree 58.9% (307) 61.6% (553)
 Third-degree 3.8% (20) 3.0% (27)
 Fourth-degree 0% (0) 0% (0)
 Episiotomy 33.6% (175) 31.5% (283)
 Extended episiotomy 1.5% (8) 1.1% (10)
Pregnancies at < 37 weeks gestation, % (n) 3.4% (18) 3.1% (29)
Birth weight, g, mean ± SD 3461 ± 485) 3460 ± 494)

Ismail et al.

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

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