Stages of Labour | placebo group n = 64 | HBB group n = 59 | P-value |
First stage (minutes) | 269.3 ± 135.9 | 279.1 ± 134.0 | 0.691 |
Second stage (minutes) | 34.1 ± 18.2 | 33.6 ± 18.1 | 0.886 |
First + Second stage (minutes) | 305.3 ± 148.9 | 312.5 ± 146.9 | 0.788 |