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Mean differences in number of decayed teeth and total dmf score using World Health Organization and World Health Organization + early carious lesions criteria
| Criteria | Mean | SD | Mean difference | t | P |
|---|---|---|---|---|---|
| WHO (Decayed) | 2.6 | 2.9 | 1.59 | 16.9 | <0.05* |
| WHO + ECL (total decayed) | 4.2 | 4.1 | |||
| WHO (dmf) | 2.6 | 3.03 | 1.60 | 17.0 | <0.05* |
| WHO + ECL (dmf) | 4.3 | 3.15 |
*P<0.05 is statistically significant. WHO: World Health Organization; ECL: Early carious lesions; SD: Standard deviation; dmf: decayed, missing, or filled
