TABLE 4.

Association Between Age and Chlamydia in Pregnancy

	Crude Odds Ratio (95% CI)	Model 1, Adjusted Odds Ratio* (95% CI)	Model 2, Adjusted Odds Ratio† (95% CI)	Model 3, Adjusted Odds Ratio‡ (95% CI)
Age, y
<25	10.1 (8.0–12.9)	7.9 (6.2–10.1)	7.8 (6.1–9.9)	7.2 (5.6–9.2)
25–29	2.7 (2.0–3.5)	2.4 (1.8–3.1)	2.3 (1.8–3.1)	2.3 (1.7–3.0)
30+	Referent	Referent	Referent	Referent

*Model 1 adjusted for race.

^†Model 2 adjusted for race and urban residence.

^‡Model 3 adjusted for race, urban residence, and insurance status.