Table 4. Incidence Rate of Dental Caries for Experimental and Active Controla.
| Variable | Experimentalb | Active controlc | Total | Incidence rate difference (95% CI) | Incidence rate ratio (95% CI) |
|---|---|---|---|---|---|
| Caries, No. | 1625 | 1433 | 3058 | 0.000 (−0.000 to 0.001) | 1.046 (0.973 to 1.123) |
| Tooth-years, No. | 157 979 | 145 653 | 303 632 | ||
| Incidence rate | 0.010 | 0.010 | 0.010 |
a
Each condition also received fluoride varnish.
b
Experimental refers to treatment with silver diamine fluoride.
c
Active control refers to dental sealant and atraumatic restorative treatment.