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Table 1 The maternal characteristics and obstetric outcome at the two study sites

From: Oxytocin administration for induction and augmentation of labour in polish maternity units – an observational study

  Unit A
N = 244
Unit B
N = 301
Total
N = 545
p -value
  n (%) n (%) n (%)  
Age (years)     p = 0.117
χ2 = 4,29
≤24 16 (7) 20 (7) 36 (7)
25–34 162 (66) 222 (73) 384 (70)
≥ 35 66 (27) 59 (20) 125 (23)
Gestational age (weeks)     p = 0.000*
χ2 = 16,67
37–39 108 (44) 186 (62) 294 (54)
> 40 136 (56) 115 (38) 251 (46)
Parity     p = 0.576
χ2 = 4,81
Nulliparous 165 (68) 210 (70) 375 (69)
Multiparous 79 (32) 91 (30) 170 (31)
Type of delivery     p = 0.021*
χ2 = 5,26
Vaginal delivery 214 (88) 242 (80) 456 (84)
Cesarean sections 30 (12) 59 (20) 89 (16)
Induction 161 (66) 202 (67) 363 (67) p = 0.802
χ2 = 0,06
Augmentation 83 (34) 99 (33) 182 (33)
Postpartum hemorrhage (ml)a     p = 0.000*
χ2 = 127,08
< 300 8 (4) 123 (51) 131 (29)
301–500 199(93) 108 (45) 307 (67)
> 501 7 (3) 11 (4) 18 (4)
Epidural     p = 0.000*
χ2 = 38,65
Yes 92 (38) 194 (64) 286 (52)
No 152 (62) 107 (36) 259 (48)
Apgar score (points)    
1 min < 7 1 (0.4) 1 (0.3) 2 (0.4)
5 min < 7 2 (0.8) 0 2 (0.4)
10 min < 7 0 0 0
Birth weight (g)     p = 0.924
χ2 = 0,09
< 4000 224 (92) 277 (92) 501 (82)
≥4000 20 (8) 24 (8) 44 (8)
  1. *p-value (p < 0,05)
  2. a only vaginal deliveries were included