Table 4.
Logistic Regression Results.
| Characteristics | Univariate analysis | Multivariate analysisb | ||||
|---|---|---|---|---|---|---|
| p-value | OR | CI 95% | p-value | Aj OR | CI 95% | |
| Total time in use of HAART | 0.000a | - | - | 0.013a | 0.981 | 0.96-0.99 |
| Concomitant medications over 30 consecutive days in previous year | 0.002a | 0.109 | ||||
| Yes | - | - | ||||
| No | 0.29 | 0.13-0.65 | 0.423 | 0.14-1.21 | ||
| Modifications in HAART before previous year due to abandonment or poor adherence | 0.018a | 0.159 | ||||
| No | - | - | ||||
| Yes | 3.39 | 1.33-8.65 | 2.852 | 0.66-12.25 | ||
| Regimen containing zidovudine | 0.021a | 0.359 | ||||
| Yes | - | - | ||||
| No | 2.28 | 1.11-4.66 | 1.601 | 0.58-4.37 | ||
| AIDS defining illness prior to HAART | 0.040a | 0.515 | ||||
| Yes | 0.88 | 0.28-2.77 | 1.475 | 0.45-4.74 | ||
| No | - | - | ||||
| Irregular use of HAART in previous year | 0.071a | 0.403 | ||||
| Yes | 2.22 | 0.91-5.39 | 1.888 | 0.42-8.36 | ||
| No | - | - | ||||
| Nadir CD4-count | 0.000a | - | - | 0.000a | 0.985 | 0.97-0.99 |
| Time of undetectable HIVVL | 0.000a | - | - | 0.037a | 0.969 | 0.94-0.99 |
OR, odds ratio; CI 95%, confidence interval of 95%; Aj OR, adjusted odds ratio; HAART, highly active antiretroviral therapy; nadir CD4-count, the lowest CD4 ever presented by patient; HIVVL, HIV viral load; undetectable HIVVL, over time the most common limit of detection was less than 400 copies/ml.
a p-value < 0,050.
b Multivariate analysis was performed by the binary logistic regression model using Enter method for all variables with a p-value < 0.1 in the bivariate analysis model who fitted the requirements for logistic regression. It is important to note that the inclusion of variables in this model was performed according to a hierarchical causal theoretical tree previously developed for this study.