. Author manuscript; available in PMC: 2018 Nov 1.

Published in final edited form as: J Matern Fetal Neonatal Med. 2017 Aug 9;31(22):3014–3020. doi: 10.1080/14767058.2017.1362384

Table 4.

Timing of delivery in gestational age categories by IPI among women with PPROM.

Gestational age categories (weeks)	IPI ≤6 months (N = 2104) (%)	IPI 7–23 months (N = 1566) (%)	IPI ≥24 months (N = 3127) (%)	p value
≤ 24⁰	0 (0.0)	313 (20.0)	207 (6.6)	<.001
24¹–28⁰	217 (10.3)	190 (12.1)	298 (9.5)	.022
28¹–32⁰	570 (27.1)	231 (14.7)	520 (16.6)	<.001
32¹–34⁰	632 (30.0)	355 (22.7)	871 (27.8)	<.001
34¹–36⁶	685 (32.6)	477 (30.5)	1231 (39.4)	<.001

Data are N (%).

IPI: interpregnancy interval; PPROM: preterm premature rupture of membranes