Table 2. Multivariable analysis of factors associated with nonadherence to primary prophylaxis against Pneumocystis jirovecii pneumonia (PCP) – Supplement to HIV/AIDS Surveillance (SHAS) project, 2000–2004.

Characteristics	Adjusted Odds Ratio (95% Confidence Interval)*
	N = 1,666
Illicit drug use in last year
No	Reference
Marijuana only	1.6 (1.1–2.4)
Non-injection drugs other than marijuana	1.5 (1.0–2.1)†
Injection drug use	2.3 (1.3–4.1)
Number of days mental health described as not good last month
0	Reference
≥1	1.6 (1.2–2.2)
Recent CD4 count (cells/μL)
<200	1.6 (1.1–2.2)
≥200	Reference
Unknown/missing	0.9 (0.6–1.4)
Antiretroviral therapy (ART) in the past month
On ART, always adherent	Reference
On ART, usually adherent	9.6 (6.7–13.7)
On ART, sometimes, rarely, or never adherent	18.4 (11.1–30.4)
On ART, unknown or missing information about adherence	2.7 (1.5–4.7)
Not taking ART	5.1 (3.3–8.1)

^*In addition to adjusting for variables included in this table, we controlled for region of residence in the U.S. and year of SHAS interview.

^†P-value<0.05.