TABLE 4.

The Odds Ratios of the Association Between Neighborhood Drug Markets and a Current Bacterial STI among a Household Sample of 15–24 Year Olds (n=568) from Selected Neighborhoods (n=63), Baltimore, Maryland, 2004–2007.

Outcome – Current bacterial STI b	Model 1 a OR	95% CI	Model 2 a AOR	95% CI	Model 3 a AOR	95% CI
Survey-reported neighborhood drug markets from a household study (NIAAH)	7.38	2.06, 26.41**	6.54**	1.85, 23.14	10.89**	1.87, 63.31
Control variables
Individual-level
Age			0.91	0.81, 1.03	0.91	0.81, 1.03
Sex           female			Referent		Referent
male			0.89	0.46, 1.72	0.90	0.46, 1.79
Condom use at last sex       yes			Referent		Referent
no			1.13	0.57, 2.23	1.15	0.57, 2.31
No. of sex partners in the past 90 days  0–1			Referent		Referent
≥ 2			1.42	0.72, 2.81	1.45	0.72, 2.91
Neighborhood-level
Socioeconomic status					1.41	0.82, 2.43

Model 1, Neighborhood level variable of interest and outcome;

Model 2, Neighborhood level variable of interest, individual level control variables, and outcome;

Model 3, Neighborhood level variable of interest, individual and neighborhood level control variables, and outcome;

OR, odds ratio;

AOR, adjusted odds ratio;

CI, confidence interval

^aThe models are nonlinear multilevel models using multilevel sampling weights.

^bCurrent bacterial STI defined as a current chlamydia and/or gonorrhea infection.

^**P < 0.05.

^*P < 0.10.