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Relationship between the frequency of brushing and periodontitis [n (%)]
| Frequency of brushing | Control | Moderate periodontitis | Severe periodontitis | P |
|---|---|---|---|---|
| 1 time/day | 85 (32.69) | 97 (38.19) | 167 (39.95) | 0.372* |
| 2 times/day | 139 (53.46) | 133 (52.36) | 209 (50.00) | |
| 3 times/day | 25 (9.62) | 21 (8.27) | 33 (7.89) | |
| 1 time/several days | 2 (0.77) | 1 (0.39) | 2 (0.48) | |
| Never brushing | 9 (3.46) | 2 (0.79) | 7 (1.67) |
Fisher’s exact test.
