Table 5. Odds ratios for significant associations in pooled samples.

Sample	Gene	SNP	Genic Location	Model	OR	95% CI	Model p
Maternal	PTGER3	rs977214	Intron	AAvsAG/GG	0.55	0.37–0.82	3×10−3
		rs6665776	Intron	AA/ACvsCC	1.75	1.18–2.60	5×10−3
		rs2072947	Intron	CCvsCT/TT	0.68	0.47–0.97	0.03
Fetal	PON1	rs854552	3′UTR	CC/CTvsTT	1.32	1.13–1.53	4×10−4
		rs2272365	Intron	GG/GTvsTT	0.61	0.44–0.85	9×10−4

Logistic regression models adjusted for center of collection and gravidity. Center of collection was not significant for any of the models (p>0.1), gravidity was significant for all of the models (p<5×10⁻³).