| Variable | (1) Control
          (n=14)
 | (2) HIV-infected 
          OLD-negative 
          HAART-naive
          (n=13)
 | (3) HIV-infected 
          OLD-negative 
          HAART-treated
          (n=23)
 | p-value | post-hoc        p-value | Difference | 95% CI | 
      
        | Viral load assays, n (%) | N/A | 5(39%) | 23(100%) | <0.0011 |  |  |  | 
      
        | Detectable viral loada,    n(%) | N/A | 5(100%) | 14(61%) | 0.141 |  |  |  | 
      
        | Viral load [x103    RNA copies/mL],
           geometric mean (95% CI, range) | N/A | 13.65(0.43 to 436.13, 0.84-935) | 0.53(0.11 to 2.47, 0-625) | 0.0472 |  | 0.04 | (0.002 to 0.95) | 
      
        |  |  |  |  |  |  |  |  | 
      
        | Exhaled breath H2O2 [µmol/L],
            geometric mean (95% CI, range) | 0.21 (0.15 to 0.31, 0.05-0.63) | 0.77 (0.54 to 1.10, 0.42-2.20) | 0.81 (0.66 to 1.00, 0.30-1.80) | <0.0013 | <0.0014 1 vs. 2
          <0.0014 1 vs. 3
              1.004 2 vs. 3 | 3.64 3.83
 | (2.18 to 6.07)
          (2.44 to 6.01) | 
      
        | Resting CL [mV/104 cells],
            geometric mean (95% CI, range) | 0.59 (0.50 to 0.70, 0.28-0.84) | 0.79 (0.66 to 0.94, 0.47-1.22) | 0.87 (0.73 to 1.04, 0.43-2.14) | 0.0043 | 0.0704 1 vs. 2
              0.0044 1 vs. 3
              1.004 2 vs. 3 | 1.51 | (1.14 to 2.01) | 
      
        | fMLP-induced peak CL [mV/104 cells],
            geometric mean (95% CI, range) | 0.92 (0.74 to 1.13, 0.42-2.24) | 1.61 (1.29 to 2.02, 0.90-2.97) | 1.42 (1.19 to 1.70, 0.62-2.87) | <0.0013 | 0.0014 1 vs. 2
              0.0054 1 vs. 3
              1.004 2 vs. 3 | 1.76 1.55
 | (1.23 to 2.52)
          (1.13 to 2.13) | 
      
        | Adjusted variables for significant difference on    PMNs count: | 
      
        | Exhaled breath H2O2 [µmol/L]
          geometric mean (95% CI) | N/A | N/A | N/A | N/A5 |  |  |  | 
      
        | Resting CL [mV/104 cells],
          geometric mean (95% CI) | 0.75(0.68 to 0.83) | 0.73(0.67 to 0.80) | 0.77(0.72 to 0.83) | 0.636 |  |  |  | 
      
        | fMLP-induced peak CL [mV/104 cells],
          geometric mean (95% CI) | 1.13(0.95 to 1.35) | 1.52(1.28 to 1.79) | 1.30(1.14 to 1.47) | 0.0786 |  |  |  | 
    
      p-values: