Univariate predictors of disease regression
| Risk ratio (95% CI) | P value | |
| Age | 0.91 (0.73 to 1.15) | 0.44 |
| Female gender | 1.22 (0.38 to 3.96) | 0.74 |
| Socioeconomic score | 1.01 (0.88 to 1.15) | 0.93 |
| Urban school | 2.15 (0.63 to 7.37) | 0.22 |
| Governmental school | 0.77 (0.21 to 2.82) | 0.69 |