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Relation between frequency of brushing and gingivitis
| Type of Gingivitis | Once Daily | Twice Daily | Occasionally | CHI-Sq. | p-value |
|---|---|---|---|---|---|
| Healthy | 337(74.1%) | 115(25.3%) | 3(0.7%) | 38.31 | p=0.001 (p<0.05) |
| Mild Gingivitis | 473(81.0%) | 110(18.8%) | 1(0.2%) | ||
| Moderate Gingivitis | 47(77.0%) | 235(16.4%) | (86.6%) | ||
| Total | 857 | 235 | 8 |
