Type Model Dependent Variable Independent Variable Regression Type R-squared Coefficient (95% CI) Standardized
Coefficient
p-value
Univariate 1 Exhaled H2O2 [µmol/L]
(n=19)
(detectable viral load subgroup)
Log10 (detectable viral load) [RNA copies/mL] Linear 0.23 0.180 (0.037 to 0.323)   0.014
Multivariate 2 Exhaled H2O2 [µmol/L]
(n=19)
(detectable viral load subgroup:
HAART-naive and HAART-treated)
Log10 (detectable viral load) [RNA copies/mL]
Treatment with HAARTConstant
Linear, stepwise 0.35 0.229 (0.080 to 0.377)
0.401 (0.010 to 0.791)
-0.189 (-0.818 to 0.440)
0.6082 0.365 0.003 0.044 0.556
3 Exhaled H2O2 [µmol/L]
(n=14)
(detectable viral load subgroup:
HAART-treated only)
Log10 (detectable viral load) [RNA copies/mL]CD4 count [cells/µL]
HIV-infection duration [yrs]
HAART duration [mths]Constant
Linear, stepwise 0.79 0.464 (0.270 to 0.659)
0.0017 (0.0003 to 0.0031)
0.155(0.011 to 0.298)
-0.015 (-0.035 to 0.003)
-1.50 (-2.56 to -0.44)
1.162 0.938 0.932 -0.944 <0.001 0.015 0.035 0.110 0.005
HAART, highly active anti-retroviral therapy
Table 4: Summary of regression models in HIV-infected patients without clinical signs and symptoms of opportunistic lung disease (OLD-negative).