Figure 4

Multivariate logistic regression analysis of factors that affect algorithm specificity among the 412 patients that are either HAART-naïve or exhibit HIV-1 RNA ≥50 copies/mL despite HAART. The meaning of the colors and numbers is as in the preceding figures. Odds ratios of variables of particular interest and their 95% confidence intervals are shown in the text. HIV-1 RNA was used as a continuous, logarithmized parameter, and concentrations below the lower limit of detection were set to 1 copy/mL.