Table 1. Characteristics of the study population.
| Group 1 (n=83) | Group 2 (n=82) | Group 3 (n=82) | p-value | |
|---|---|---|---|---|
| Age (years) | 18.0 (16.0–27.0)A.B | 22.0 (20.7–26.0) | 25.0 (21.0–30.0) | <0.0001† |
| BMI (kg/m2) | 32.3 (28.6–33.9) | 30.8 (28.6–32.4) | 30.9 (29.0–32.9) | 0.05† |
| Gestational age (weeks) | 40.1 (39.0–40.5) | 39.3 (38.1–40.2) | 39.6 (37.7–40.7) | 0.05† |
| Birth weight (g) | 3180.0 (474) | 3207 (439) | 3139 (543) | 0.605∫ |
| Apgar score at 1st minute | 8 (6–8)A.B | 8 (8–8) | 8 (8–8) | 0.0004† |
| Apgar score at 5th minute | 9 (9–9) | 9 (9–9) | 9 (9–9) | >0.9999† |
Group 1: analgesia performed in patients with cervical dilatation ≤4.0 cm; Group 2: analgesia performed in patients with cervical dilatation between 5.0 and 8.0 cm; Group 3: analgesia performed in patients with cervical dilatation ≥9.0 cm. BMI: body mass index; Kruskal-Wallis †median (interquartile range); ANOVA ∫mean (standard deviation); AGroup 1 vs. Group 2; BGroup 1 vs. Group 3.