Table 4 Variance partition coefficient (VPC)* with 95% confidence intervals of between-schools within district. Null and final multilevel Poisson regression models for Untreated caries prevalence, Prevalence of caries experience and Caries damage count
Type model | VPC for untreated caries prevalence (UCP) | VPC for prevalence of caries experience (dmft-prevalence) | VPC for caries damage count (dmft ≥ 1) |
|---|---|---|---|
Null model | 0.086 (0.009–0.572) | 0.089 (0.021–0.341) | 0.011 (0.001–0.073) |
Final model | < 0.0001 | < 0.0001 | < 0.0001 |