Work anomaly | case | Witnesses | Statistical test | ||
Eff | % | Eff | % | ||
Dynamic dystocia | 18 | 15 | 15 | 6.2 | P-0.006 |
Mechanical dystocia | 14 | 11.7 | 13 | 5.4 | P-0.03 |
haemorrhage | 4 | 3.3 | 4 | 1.7 | P-0.52 |