p-value 2/22/2020 2/22/2019 p-value 2/15/2020 2/15/2019 Characteristic
NS 209 223 NS 207 174 Deliveries (n)
0.01 40.7 52.5 NS 36.7 43.7 Spontaneous onset of labor (%)
NS 1.4 1.8 0.02 1.4 5.7 Intrapartum fever (%)
NS 102 66 NS 68 64 2nd stage of labor (min)
NS 3.3 3.1 NS 2.4 3.4 Delivery <34 weeks (%)
NS 8.6 13.9 NS 8.7 12.6 Delivery <37 weeks (%)
NS 7.2 8.5 NS 7.2 6.3 Delivery >41 weeks (%)
NS 60.7 69.5 NS 59.4 70.1 NVD (%)
NS 5.3 7.6 0.02 9.7 2.3 OVD (%)
0.01 34.0 22.9 NS 30.9 27.6 CD (%)
NS 3145 3122 NS 3130 3074 Birthweight (g)
NS 7.7 6.3 0.04 4.8 10.3 Composite neonatal* (%)