Prelabor rupture of membranes and the association with cerebral palsy in term born children: a national registry-based cohort study

Table 3 Risk of stillbirth, death during delivery, neonatal mortality and cerebral palsy according to the time interval between prelabor rupture of membranes (PROM) and delivery

Number of births		Reference group			Intermediate interval (12–24 h)					Prolonged interval (>24 h)
		N	Prevalence per 1000	95% CI	N	Prevalence per 1000	95% CI	OR^a	95% CI^b	N	Prevalence Per 1000	95% CI	OR	95% CI	P-Value^c
		494,881	Prevalence per 1000	95% CI	34,759	Prevalence per 1000	95% CI	OR^a	95% CI^b	30,332	Prevalence Per 1000	95% CI	OR	95% CI	P-Value^c
Stillbirth	Yes	867	1.75	1.64–1.87	39	1.12	0.82–1.53	0.64	0.46–0.88	27	0.89	0.61–1.29	0.51	0.35–0.75	< 0.001
Stillbirth	No	494,014			34,720					30,305
Death during delivery	Yes	63	0.13	0.10–0.16	8	0.23	0.12–0.45	1.81	0.87–3.77	5	0.16	0.07–0.39	1.29	0.52–3.22	0.247
Death during delivery	No	494,014			34,720					30,305
Neonatal mortality	Yes	220	0.45	0.39–0.51	25	0.72	0.49–1.06	1.62	1.07–2.45	15	0.49	0.30–0.82	1.11	0.66–1.88	0.186
Neonatal mortality	No	493,794			34,695					30,290
Cerebral palsy	Yes	467	0.94	0.86–1.03	38	1.09	0.80–1.50	1.16	0.83–1.61	46	1.52	1.14–2.02	1.61	1.19–2.18	0.002
Cerebral palsy	No	493,327			34,657					30,244

^a OR; Odds ratio. ^b CI; Confidence interval. ^c Cochran-Armitage test for trend

ISSN: 1471-2393