Table 2.
Relationship of Oral Hygiene Practice and Substance Use with Periodontitis (N= 498)
| Habits | Cases (N=166) n (%) | Controls (N=332) n (%) | Total n (%) | p-value |
|---|---|---|---|---|
| Cigarettea | 27(16.2) | 27(8.1) | 54(10.8) | 0.006* |
| Khat/qata | 20(12.0) | 15(4.5) | 35(7.0) | 0.002* |
| Sheeshaa | 1(0.6) | 1(0.3) | 2(0.4) | 1.000† |
| Shammaha | 1(0.6) | 0(0) | 1(0.2) | 0.333† |
| Brushing once a day or less$ | 65(39.1) | 38(11.4) | 103(20.6) | <0.001* |
Notes: *Statistically significant (p<0.05), †Fishers’ test, $Reference category: brushing twice a day, aEver-users vs never-users.