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Cross-tabulation showing concordance and discordance in percent for comparison of PPI with TQH index related to classification of subjects into oral hygiene categories.
| PPI | TQH Index | |||
|---|---|---|---|---|
| Very good | Good | Moderate | Insufficient | |
| Very good | 0.6 | 1.3 | 2.1 | 0.00 |
| Good | 0.1 | 2.3 | 25.0 | 2.6 |
| Moderate | 0.4 | 1.9 | 19.7 | 34.0 |
| Insufficient | 0.00 | 0.00 | 0.6 | 9.4 |
Significant values are in bold.
