Table 4 Descriptive and logistic regression analysis regarding secondary outcome variables. Values of odds ratios are presented as crude estimates as well as after adjustment
Secondary outcome variables | p-value | Crude OR | 95% CI | Adjusted OR | 95% CI | ||
|---|---|---|---|---|---|---|---|
Total number of caesarean deliveries a | (p < 0.01) | No | Yes | ||||
BMI < 25 | 1047 (84.0%) | 199 (16.0%) | 1 | 1 | |||
BMI 25–29.9 | 258 (73.7%) | 92 (26.3%) | 1.88 | [1.42–2.49] | 1.62 | [1.18–2.22] | |
BMI ≥ 30 | 141 (69.5%) | 62 (30.5%) | 2.31 | [1.66–3.23] | 1.76 | [1.20–2.58] | |
Caesarean prior to onset of active labor a | (p < 0.01) | No | Yes | ||||
BMI < 25 | 22 (1.8%) | 1211 (98.2%) | 1 | 1 | |||
BMI 25–29.9 | 19 (5.4%) | 331 (94.6%) | 1.99 | [1.12–3.52] | 1.64 | [0.90–2.98] | |
BMI ≥ 30 | 18 (8.9%) | 185 (91.1%) | 3.37 | [1.87–6.07] | 2.75 | [1.47–5.16] | |
Reached 2nd stage of labour a | (p < 0.01) | No | Yes | ||||
BMI < 25 | 134 (10.8%) | 1112 (89.2%) | 1 | 1 | |||
BMI 25–29.9 | 66 (18.9%) | 284 (81.1%) | 1.85 | [1.38–2.48] | 0.61 | [0.45–0.84] | |
BMI ≥ 30 | 48 (23.6%) | 155 (76.4%) | 2.13 | [1.50–3.03] | 0.59 | [0.40–0.85] | |
Vacuum delivery b | (p = 0.39) | No | Yes | ||||
BMI < 25 | 1068 (85.7%) | 178 (14.3%) | 1 | 1 | |||
BMI 25–29.9 | 304 (86.9%) | 46 (13.1%) | 0.91 | [0.64–1.27] | 0.83 | [0.58–1.18] | |
BMI ≥ 30 | 181 (89.2%) | 22 (10.8%) | 0.73 | [0.46–1.17] | 0.65 | [0.40–1.06] | |
Post-partum haemorrhage ≥ 1000 mL c | (p = 0.02) | No | Yes | ||||
BMI < 25 | 1176 (89.1%) | 70 (10.9%) | 1 | 1 | |||
BMI 25–29.9 | 325 (92.9%) | 25 (7.1%) | 1.29 | [0.81–2.07] | 1.04 | [0.64–1.70] | |
BMI ≥ 30 | 181 (89.2%) | 22 (10.8%) | 2.04 | [1.23–3.38] | 1.54 | [0.90–2.61] | |
Arterial cord pH < 7.05 d | (p = 0.04) | No | Yes | ||||
BMI < 25 | 1128 (98.4%) | 18 (1.6%) | 1 | ||||
BMI 25–29.9 | 323 (97.9%) | 7 (2.1%) | 1.36 | [0.56–3.28] | |||
BMI ≥ 30 | 187 (95.7%) | 8 (4.3%) | 2.85 | [1.22–6.65] |