Table 4.

Multivariable logistic regression analysis of demographic and illicit drug factors associated with current CD4 lymphocyte count in HIV-infected patients on current HAART (not age restricted).

	Current CD4 lymphocyte count
	% Effect	95% CI	P-value	Median CD4 lymphocyte count
Demographics
Gender				Male	338
Female versus male	20.9	(2.3, 41.1)	0.029	Female	376
Ethnicity
African American versus Caucasian	−23.6	(−34.2, −10.9)	<0.0001	African American	291
Hispanic versus Caucasian	−18.0	(−36.2, 2.6)	0.084	Hispanic	301
Other versus Caucasian	1.0	(−30.8, 43.3)	0.95	Other ethnicity	343
Age (per decade)	4.0	(−3.4, 12.2)	0.34	Caucasian	406
Significant candidates
Heroin				Heroin: never use	359
Current versus never	−53.0	(−85.1, −18.7)	0.003	Heroin: current use	261
Past versus never	−6.6	(−24.0, 13.5)	0.51	Heroin: past use	335
Amphetamines				Amphetamines: never use	332
Current versus never	101.4	(41.8, 198.4)	<0.0001	Amphetamines: current use	466
Past versus never	15.5	(0.3, 32.0)	0.044	Amphetamines: past use	376
Income				Income: >US$35 000	424
<US$12 000 versus >US$35 000	−28.5	(−38.3, −15.5)	<0.0001	Income: <US$12 000	286
US$12 000–35 000 versus >US$35 000	−15.1	(−27.7, −1.5)	0.032	Income: US$12 000–35 000	336

CI, confidence interval. Outcome is log-transformed CD4 lymphocyte count; results are back-transformed. Number of current HAART recipients: 885.