Characteristics of HIV-infected subjects according to respiratory symptoms.

Note: BP = bacterial pneumonia; CI = confidence interval; HAART = highly active antiretroviral therapy; IDU = intravenous drug use; MSM = men who have sex with men; OR = odds ratio; PCP = Pneumocystis pneumonia; SD = standard deviation.*per year. ̂per 0.01 decrease.¶Odds ratio as compared to never smokers.