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Smoking is extremely common among HIV-infected patients. To quantify the contribution of smoking to mortality in HIV patients, researchers analyzed a median of 4 years of follow-up data from 2921 patients (78% men, 77% on antiretroviral therapy at baseline) in a Danish national HIV cohort and from 10,642 matched controls in the Danish general population. Each patient's smoking status — current (any weekly tobacco use), previous, or never — was assessed at time of enrollment and held constant for purposes of analysis. Duration of smoking was not considered. Outcomes data came from Danish national registries.
In the HIV-infected cohort, analyses adjusted for HIV-related and other clinical variables revealed that all-cause mortality was more th…