Table 3.
Multivariable Linear Model Predicting Trachoma According to Number of Years (Past 3) of Annual Mass Treatment With Azithromycin
| Characteristic | β (95% CI), % | P |
| Intercepta | 15.2 (11.8–18.8) | <.001 |
| Baseline trachoma prevalence (per 10% increase) | 2.2 (1.1–3.2) | <.001 |
| No. of rounds of mass treatment (per round) | −1.6 (−2.9 to −0.02) | .02 |
| Average treatment coverage (per 10% increase) | −0.8 (−2.8 to 1.1) | .41 |
NOTE. CI, confidence interval.
a
Centered at 50% prevalence at baseline, 3 rounds of treatment, and average treatment coverage with azithromycin of 75%.