Table 3.

Subanalysis of preterm delivery rates on high risk pregnant women and on the rates of chorioamnionitis

Table. Secondary outcomes
Variable	Odds ratio (95% Confidence interval)	p-value	Heterogeneity (I-square)
Chorioamnionitis	0.57 (0.13, 2.48)	.24	0%
High risk < 28	0.20 (0.05, 0.83)	.04	0%
High risk < 32	0.23 (0.10, 0.51)	.02	0%
High risk < 34	0.17 (0.05, 0.59)	.02	0%
High risk < 37	0.68 (0.11, 4.26)	.45	51%