Table 2. Occurrence, severity and extent of periodontitis among study groups.
| Variables | Controls | PKD |
|---|---|---|
| (n=86) | (n=86) | |
| Periodontitis | ||
| (stage II + III + IV) | ||
| No | 51 (59.3%) | 23 (26.7%) |
| Yes | 35 (40.7%) | 63 (73.2%) |
| - | OR= 3.99 (2.00–7.59) p<0.001* | |
| Periodontitis severity | ||
| Stage II (moderate) | 22 (62.9%) | 24 (38.0%) |
| - | OR= 2.41 (1.13-5.17) | |
| p=0.012* | ||
| Stages III and IV (severe and advanced) | 13 (37.1%) | 39 (62.0%) |
| - | OR=6.65 (2.99-14.77) | |
| p<0.001* | ||
| Periodontitis extent | ||
| Localized | 21 (60.0%) | 28 (44.4%) |
| - | OR= 2.95 (1.39-6.25) | |
| p=0.002* | ||
| Generalized | 14 (40.0%) | 35 (55.6%) |
| - | OR= 5.54 (2.5-12.2) | |
| p<0.001* |
*Chi-squared test. OR = odds ratio; 95%CI = confidence interval; Significant p-values are shown in bold.