Table 5. Bivariable and multiple logistic regression analyses of predictors for having low HIV knowledge^a among HIV-infected TB patients.

Characteristics	OR	95% CI	p	AOR	95% CI	p
Age	1.0	1.0–1.0	0.84	1.0	1.0–1.0	0.96
Male	1.0	0.7–1.4	0.94	1.3	0.9–1.8	0.19
Treated at national infectious diseases referral hospitalb	0.9	0.6–1.3	0.55	0.8	0.5–1.3	0.45
Treated at Ubon Ratchathanib	1.2	0.8–1.8	0.33	1.3	0.8–2.1	0.22
Treated at Phuketb	1.0	0.6–1.6	0.93	1.1	0.6–1.9	0.73
Know anyone with TB	1.4	1.1–1.9	0.02	1.5	1.1–2.0	0.02
Severe TB diseasec	1.3	0.9–1.7	0.12	1.2	0.8–1.6	0.31
Low TB knowledge	2.3	1.6–3.3	<0.01	2.3	1.5–3.3	<0.01
Ever drank alcohol	0.6	0.5–0.9	0.01	0.6	0.4–0.9	0.01
Drank alcohol in past 3 months	0.7	0.5–1.0	0.03	0.7	0.5–1.1	0.14
Ever used sleeping pill	1.3	0.9–1.9	0.19	1.4	0.9–2.1	0.15
Took antibiotics in past 4 weeks	1.3	1.0–1.7	0.10	1.3	1.0–1.9	0.09
Visited traditional healer/private hospital first	1.3	1.0–1.9	0.09	1.3	0.9–1.9	0.18
Household has a telephone	0.7	0.5–1.0	0.03	0.7	0.5–1.0	0.04
Had sexual intercourse in past 6 months	0.8	0.6–1.1	0.19	0.9	0.6–1.2	0.51

TB, tuberculosis; HIV, human immunodeficiency virus; OR, odds ratio; AOR, adjusted odds ratio; CI, confidence interval; variables for which p≤0.20 in bivariable analyses and potential confounders were included in multiple logistic regression analysis.

^aHIV knowledge score<5; HIV knowledge score is a summary score of the number of HIV knowledge questions (see table 2 - each question is worth 1 point) that a patient correctly answered.

^bCompared with being treated in Bangkok.

^cPatients who had extra-pulmonary TB other than peripheral lymphatic TB or had all of the following characteristics: self-reported weight loss >10% of body weight, coughing up blood, difficulty breathing in past 4 weeks before TB diagnosis, and cavitary TB or >1/3 involvement of either lung at the initial evaluation.