b) Meta-analysis of all trials
There appeared to be no difference in the rates of perineal trauma. One trial, which investigated
the rate of episiotomy when support was provided from a specially trained nurse, found no significant
difference between supported women versus those with standard care (RR 0.97 [95% CI
0.90 to 1.05]). Meta-analysis of two trials, both of which investigated support by a member of
hospital staff, showed no significant difference in perineal trauma (RR 0.99 [95% CI 0.95 to
1.03]).