TABLE 1.

Univariate analysis of factors associated with self-reported lifetime history of tuberculin skin testing among populations at increased risk for HIV infection, PreveTB study, Tijuana, Baja California, Mexico, 2007

	History of tuberculin skin test
	Yes		No
Correlate	No.	%	No.	%	OR	95% CI	P valuea
Age (years)
>36	107	45.0	131	55.0	1.75	1.22–2.52	0.002
≤36	84	31.8	180	68.2	1.00
Gender
Male	134	43.8	172	56.2	1.90	1.30–2.79	0.001
Female	57	29.1	139	70.9	1.00
Housing status
Homelessness or unstable housing	101	36.2	178	63.8	0.84	0.58–1.21	0.341
Stable housing	90	40.4	133	59.6	1.00
Primary source of income comes from sex workb
Yes	33	28.7	82	71.3	1.71	1.09–2.70	0.019
No	158	40.8	229	59.2	1.00
Injection drug useb
Yes	113	48.9	118	51.1	2.37	1.64–3.43	< 0.001
No	78	28.8	193	71.2	1.00
Noninjected drug useb
Yes	113	36.5	197	63.5	0.84	0.58–1.21	0.349
No	78	40.6	114	59.4	1.00
Swallowed or smoked marijuanab
Yes	35	36.8	60	63.2	0.95	0.58–1.55	0.79
No	156	38.3	251	61.7	1.00
Ever crossed into United States
Yes	166	45.9	196	54.1	3.90	2.41–6.29	< 0.001
No	25	17.9	115	82.1	1.00
Ever diagnosed with a sexually transmitted infectionc
Yes	1	8.3	11	91.7	0.14	0.02–1.12	0.035
No	190	38.8	300	61.2	1.00
Has health insuranceb
Yes	7	35.0	13	65.0	0.87	0.34–2.23	0.775
No	184	38.2	298	61.8	1.00
Ever been in jail
Yes, only in United States, or in both United States and Mexico	139	70.2	59	29.8	18.10	10.27–31.91	< 0.001
Yes, only in Mexico	33	23.7	106	76.3	2.39	1.29–4.44	< 0.001
No	19	11.5	146	88.5	1.00
TB knowledge score (mean ± standard deviation)	3.48	0.82	3.45	0.90	NA	NA	0.792
Tested QuantiFERON TB positive
Yes	111	38.8	175	61.2	0.93	0.64–1.34	0.685
No	80	37.0	136	63.0	1.00
Tested HIV positivec
Yes	2	9.5	19	90.5	0.16	0.04–0.71	0.005
No	189	39.3	292	60.7	1.00

OR: odds ratio, CI: confidence interval, TB: tuberculosis, NA: not applicable.

^aBased on Wald chi-square test and α = 0.05.

^bIn past 6 months.

^cBased on Fisher’s exact test and α = 0.05.