34 w (n: 302) 35 w (n: 504) 36 w (n: 1061) Total (n: 1867) P
Mode of late preterm birth 0.06*
Spontaneous preterm labor 116 (38.4%) 170 (33.7%) 400 (37.7%) 686 (36.7%)
pPROM 57 (18.9%) 98 (19.5%) 243 (22.9%) 398 (21.3%)
Indicated 129 (42.7%) 236 (46.8%) 418 (39.4%) 783 (42%)