Characteristics No NICU/SCBU admission (n= 246)) NICU/SCBU admission (n=154) p value
Maternal age (years) 32.27 (±4.89) 32.78 (±4.63) 0.304
Maternal weight (Kg) 56.00 (51.10-62.00) 57.70 (51.70-62.10) 0.237
Maternal height (cm) 159.40 (±5.520) 158.59 (±5.700) 0.156
Maternal BMI (Kg/m2) 21.92 (20.17-24.16) 23.07 (20.71-24.92) 0.030*
Gestational age (weeks) 39.71 (38.57-40.71) 39.43 (38.21-40.57) 0.092
Smoking 4 (1.63; 0.00-3.23) 5 (3.3; 0.42-6.12) 0.286
Chinese Asian 241 (98.00; 96.19-99.74) 149 (96.80; 93.9-99.58) 0.449
Nulliparous 134 (54.47; 48.20-60.74) 119 (77.27; 70.60-84.00) <0.001*
Induction of labour 173 (70.32; 64.58-76.07) 124 (80.52; 74.19-86.85) 0.023*
Indications for labour induction Indications for labour induction Indications for labour induction Indications for labour induction
Postdate Diabetes (preexisting or GDM) Hypertension Decrease FM/ Suboptimal CTG Large or small for gestational age SROM 47 (19.11; 14.16-24.05) 9 (3.70;1.30-6.02) 8 (3.25; 1.02-5.48) 24 (9.76; 6.02-13.49) 20 (8.13; 4.69-11.57) 58 (23.58; 18.24-28.92) 30 (19.48; 13.15-25.81) 15 (9.74; 5.00-14.48) 4 (2.60; 0.06-5.14) 12 (7.79;3.51-12.07) 19 (12.34; 7.09-17.59) 37 (24.03; 17.20-30.85) 0.926 0.013* 0.709 0.504 0.167 0.918
Estimated foetal weight (g) 3176 (2920-3361) 3219 (2959-3423) 0.280
Estimated foetal weight (z-score) -0.02 (±1.44) 0.32 (±1.39) 0.021*
Umbilical artery PI 0.80 (0.700-0.91) 0.78 (0.68-0.89) 0.321
Middle cerebral artery PI 1.40 (1.22-1.61) 1.38 (1.20-1.63) 0.588
Cerebroplacental ratio 1.79 (1.51-2.12) 1.78 (1.47-2.13) 0.881
Mean uterine artery PI 0.75 (0.62-0.94) 0.72 (0.64-0.85) 0.566
Short term variability (ms) 7.90 (6.45-9.80) 7.90 (6.75-9.50) 0.957
Dawes-Redman criteria not met 22 (8.98; 5.37-12.58) 13 (8.44; 0.04-0.13) 0.853
Spontaneous vaginal delivery 203 (82.52; 77.74-87.30) 102 (66.23; 58.68-73.79) <0.001*
Caesarean delivery 27 (10.98; 7.04-14.91) 34 (22.08; 15.45-28.70) 0.003*
Operative vaginal delivery 16 (6.50; 3.40-9.61) 18 (11.69; 6.56-16.82) 0.060
Birth weight (g) 3175 (2983-3417) 3217 (2985-3491) 0.475
Birth weight z-score -0.11 (±0.68) 0.11 (±0.81) 0.005*
Apgar score at one minute 8.81 (±0.59) 8.49 (±1.11) 0.001*
Apgar score at five minutes 9.85 (±0.38) 9.63 (±0.78) 0.002*
Umbilical cord arterial pH 7.25 (7.20-7.30) 7.24 (7.18-7.29) 0.163
Umbilical cord arterial pH < 7.1 53 (21.99; 16.73-27.26) 47 (31.54; 24.00-39.09) 0.036*
Base excess -12 mmol/L 7 (2.90; 0.77-5.04) 13 (8.72; 4.14-13.31) 0.011*
Caesarean section for foetal distress 5 (2.03; 0.26-3.81) 7 (4.55; 1.22-7.87) 0.152
Operative vaginal delivery for foetal distress 9 (3.66; 1.30-6.02) 13 (8.44; 4.00-12.88) 0.041*