Table 4.
Mediation Effect of Stigma on Relationship Between Self-Efficacy and Adherence Analyzed by Logistic Regression and Sobel Test
| Regression model | Independent variable | Dependent variable | β | SE | OR (95% CI) |
|---|---|---|---|---|---|
| 1. | Self-efficacy | Adherence | 0.597a | 0.133 | 1.82 (1.34–2.36) |
| 2. | Self-efficacy | Stigma | −0.431a | 0.107 | 0.65 (0.52–0.80) |
| 3. | Stigma | Adherence | −0.034a | 0.015 | 0.96 (0.93–0.98) |
| 4. | Self-efficacy stigma | Adherence | 0.497a | 0.137 | 1.64 (1.26–2.15) |
Sobel test: Z=1.975, p=0.048 (two tails).
a
p<0.01.
Models controlled for the following variables: age, gender, marriage education, family income, years since HIV diagnosis, drug use in last 3 months, and CD4 counts.
SE, standard error; OR, odds ratio; CI, confidence interval.