High-volume month August 2017
Low-volume month November 2017
p-value*
n (%) n (%)
Of all women (n=358) (n=332)
Age
<20 years old 25 (7.1) 29 (8.8) I 0.801
20-29 years old 153 (43.2) 146 (44.2) I
30-39 years old 158 (44.6) 138 (41.8) I
≥40 years old 18 (5.1) 17 (5.2) I
Information missing 4 (-) 2 (-)
Parity
0 140 (39.1) 106 (31.9) I 0.064
1-4 161 (44.9) 178 (53.6) I
≥5 57 (15.9) 48 (14.5) I
Information missing 0 (-) 0 (-)
Singleton/multiple gestations
Singletons 351 (98.0) 324 (97.6) I 0.683
Multiple gestations 7 (2.0) 8 (2.4) I
Information missing 0 (-) 0 (-)
Gestational age
Extremely preterm (week 28-33) 19 (5.5) 18 (5.5) I 0.182
Preterm (week 34-36) 27 (7.8) 42 (12.7) I
Term (37-41 weeks) 291 (84.3) 265 (80.3) I
Post term (≥ 42 weeks) 8 (2.3) 5 (1.5) I
Information missing 13 (-) 2 (-)
Antenatal care
≥1 visit 137 (43.6) 152 (52.2) I 0.034ψ
Not attended 177 (56.4) 139 (47.8) I
Information missing 44 (-) 41 (-)
Obstetric risk factors in current pregnancy
Pre-eclampsia 34 (9.5) 30 (9.1) I 0.478
Eclampsia 2 (0.6) 4 (1.2) I
Premature rupture of membrane 38 (10.6) 52 (15.8) I
Ante-partum haemorrhage 12 (3.4) 11 (3.3) I
Fever 1 (0.3) 2 (0.6) I
Other** 27 (7.5) 23 (7.0) I
None 244 (68.2) 208 (63.0) I
Information missing 0 (-) 2 (-)
Of women with parity ≥1 (n=218) (n=226)
Obstetric history
Previous death of child/children*** 53 (26.5) 54 (24.5) 0.646
1 previous caesarean section 30 (13.8) 35 (15.5) I 0.409
≥2 previous caesarean sections 22 (10.1) 15 (6.6) I
Of all women (n=358) (n=332)
Progress on admission
Before active phase of labour**** 60 (20.0) 55 (19.3) I 0.683
First stage of active phase of labour 197 (65.7) 180 (63.6) I
Second stage of labour 43 (14.3) 48 (17.0) I
Information missing 58 (-) 49 (-)
Referrals after failed trial of labour at home
Referrals***** 24 (6.7) 25 (7.6) I 0.665
ψ p-value < 0.05 *Fisher exact test. ** Other obstetric risk factors: Polyhydramnios (23); Oligohydramnios (14); Suspected chorionamnitis (3); Foetal malformation (1); Bicorn uterus (1); Diabetes (3); Prolonged labour and haematuria prior to admission (1); Hypothyroidism (2); Anaemia (1); First twin delivered prior to admission second still intrauterine (1). ***Documentation was insufficient to differentiate perinatal deaths from deaths later in life. ****Cervical dilation <4 cm *****30 of all 34 women with failed trial of labour at home (88.2%) had received unregulated oxytocin or misoprostol (15/49 missing information regarding prior augmentation). ψ p-value < 0.05 *Fisher exact test. ** Other obstetric risk factors: Polyhydramnios (23); Oligohydramnios (14); Suspected chorionamnitis (3); Foetal malformation (1); Bicorn uterus (1); Diabetes (3); Prolonged labour and haematuria prior to admission (1); Hypothyroidism (2); Anaemia (1); First twin delivered prior to admission second still intrauterine (1). ***Documentation was insufficient to differentiate perinatal deaths from deaths later in life. ****Cervical dilation <4 cm *****30 of all 34 women with failed trial of labour at home (88.2%) had received unregulated oxytocin or misoprostol (15/49 missing information regarding prior augmentation). ψ p-value < 0.05 *Fisher exact test. ** Other obstetric risk factors: Polyhydramnios (23); Oligohydramnios (14); Suspected chorionamnitis (3); Foetal malformation (1); Bicorn uterus (1); Diabetes (3); Prolonged labour and haematuria prior to admission (1); Hypothyroidism (2); Anaemia (1); First twin delivered prior to admission second still intrauterine (1). ***Documentation was insufficient to differentiate perinatal deaths from deaths later in life. ****Cervical dilation <4 cm *****30 of all 34 women with failed trial of labour at home (88.2%) had received unregulated oxytocin or misoprostol (15/49 missing information regarding prior augmentation). ψ p-value < 0.05 *Fisher exact test. ** Other obstetric risk factors: Polyhydramnios (23); Oligohydramnios (14); Suspected chorionamnitis (3); Foetal malformation (1); Bicorn uterus (1); Diabetes (3); Prolonged labour and haematuria prior to admission (1); Hypothyroidism (2); Anaemia (1); First twin delivered prior to admission second still intrauterine (1). ***Documentation was insufficient to differentiate perinatal deaths from deaths later in life. ****Cervical dilation <4 cm *****30 of all 34 women with failed trial of labour at home (88.2%) had received unregulated oxytocin or misoprostol (15/49 missing information regarding prior augmentation).