Average rate of dilatation of cervix in primigravida and multigravida (cm/hr.) | Between 4 - 6 cm dilatation | Between 6 - 10 cm dilatation |
Spontaneous (n = 371) | 1.72 (SD = 1.10) | 3.44 (SD = 1.84) |
Induced (n = 269) | 1.68 (SD = 1.63) | 2.69 (SD = 1.18) |
| 95% CI = −0.252 to 0.172 t test = −0.370 P value = 0.711 | 95% CI = −1.001 to −0.499 t test = −5.86 P value = <0.0001 |