Abstract
Survival among HIV-infected patients markedly improved with the introduction of highly active antiretroviral therapy (HAART). Easier to take and more effective HAART options have improved the one-year virologic success rate among naive patients. Numerous studies have shown that initiating HAART and restoration of CD4 cells positively impact survival. There are only a few evaluations that have been carried out on the changes in survival among patients who are severely immunosuppressed. We evaluated survival among a cohort of veterans with CD4<100 cells/mm(3) (CD4 < 100) in three time periods reflecting early, mid, and recent HAART. Using the HIV clinic database, all patients with CD4 < 100 seen between 1996 and 2004 were identified (n=394). Patients entered Cohorts 1 (n=219), 2 (n=72), and 3 (n=103) in 1996-1998, 1999-2001, and 2002-2004, respectively. Data on demographics, AIDS-defining illnesses, co-morbidities, treatment, CD4, and viral load (VL) were abstracted. Survival analysis controlling for the above variables was performed and odds ratios with 95% confidence intervals were calculated. Rate of virologic suppression was higher for Cohort 2 when compared to Cohort 1 (63% vs. 46%, p<0.05), but lower for Cohort 3 when compa...Continue Reading
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