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Age, CAL and PPD level of participants.
| Index | Cases | Controls | P value |
|---|---|---|---|
| Age (years; mean ±SD) | 57.32±13.48 | 56.99±13.04 | 0.841 |
| CAL (mm; mean ±SD) | 4.46±0.75 | 2.55±0.55a | P<0.05 |
| PPD (mm; mean ±SD) | 5.11±0.81 | 2.98±0.64a | P<0.05 |
CAL – clinical attachment level; PPD – probing pocket depth.
