Table 1 Obstetric and labor related characteristics of patients with obstetric anal sphincter injury (OASI) according to age groups
Parameter | ≤21 years | 26–35 years | P valuea |
|---|---|---|---|
No. of patients | 67 | 199 | |
Gestational diabetes | 0 | 6 (3.0%) | 0.342 |
PIH/Preeclampsia | 2 (3.0%) | 0 | 0.063 |
Gestational week | 39.8 ± 1.1 (40) | 39.7 ± 1.1 (40) | 0.386 |
Induction of labor | 15 (22.4%) | 59(29.6%) | 0.274 |
Epidural analgesia | 46 (69.7%) | 151 (76.3%) | 0.328 |
Artificial rupture of membranes | 29/58 (50.0%) | 85/172 (49.4%) | 1.000 |
Meconium stained amniotic fluid | 6 (9.1%) | 42 (21.3%) | 0.027 |
Prolonged 2nd stage | 14 (20.9%) | 50/194 (25.1%) | 0.511 |
Operative vaginal delivery | 14 (20.9%) | 72 (36.2%) | 0.023 |
Birth weight (grams) | 3385 ± 421 (3406) | 3381 ± 413(3386) | 0.950 |
Birth weight > 90th percentile (> 3900 g) | 5 (7.5%) | 19 (9.5%) | 0.806 |
Head circumference (cm)b | 34.5 ± 1.4 (34.3) | 34.6 ± 1.2 (34.5) | 0.846 |
Head circumference > 90th percentile (> 36 cm)b | 12/51 (23.5%) | 23/139 (16.5%) | 0.294 |
Episiotomy | 18 (26.9%) | 67 (33.7%) | 0.364 |