Latency after Preterm Prelabor Rupture of the Membranes: Increased Risk for Periventricular Leukomalacia

Table 4

Regression analysis of the impact of different birth weights and preterm premature rupture of membranes- (pPROM-) delivery intervals on periventricular leukomalacia risk, assuming fetal weight gains of 0 g in 24 h and 48 h, 200 g in 1 week, and 400 g in 2 weeks [26]. Data are estimated incidence of periventricular leukomalacia.

(a) Male infants

	Birth weight
	500 g	1000 g	1500 g	2000 g	2500 g
pPROM-delivery interval
0 h	0.268	0.096	0.035	0.012	0.004
24 h	0.279	0.100	0.036	0.013	0.005
48 h	0.291	0.105	0.038	0.014	0.005
1 week	0.240	0.086	0.031	0.012	0.004
2 weeks	0.214	0.077	0.028	0.010	0.004

(b) Female infants

	Birth weight
	500 g	1000 g	1500 g	2000 g	2500 g
pPROM-delivery interval
0 h	0.081	0.029	0.010	0.004	0.001
24 h	0.085	0.030	0.011	0.004	0.001
48 h	0.088	0.032	0.011	0.004	0.001
1 week	0.073	0.026	0.009	0.003	0.001
2 weeks	0.065	0.023	0.008	0.003	0.001