Table 1.
Characteristics of the study population.
| Mean ± SD | Min–Max | |
|---|---|---|
| Age (years) | 50.1 ± 8.6 | 33.0–68.0 |
| Smoking status (pack-years) | 11.5 ± 16.7 | 0.0–80.0 |
| BMI | 23.5 ± 2.8 | 16.6–32.4 |
| eGFR (ml/min/1.73 m2) | 81.4 ± 13.0 | 53.5–125.7 |
| HbA1C (%) | 5.4 ± 0.4 | 3.8–6.9 |
| Parameters related to periodontitis | ||
| O'Leary's PCR (%) | 47.0 ± 22.6 | 0.0–99.0 |
| BOP (%) | 14.6 ± 14.0 | 0.0–73.8 |
| Mean PD (mm) | 2.5 ± 0.6 | 1.2–4.8 |
| PD ≥ 4 mm (number of sites) | 17.3 ± 22.3 | 0.0–114.0 |
| PD 4, 5 mm (number of sites) | 14.2 ± 16.4 | 0.0–82.0 |
| PD ≥ 6 mm (number of sites) | 3.1 ± 7.7 | 0.0–51.0 |
| Mean CAL (mm) | 2.7 ± 0.7 | 1.2–5.4 |
| CAL ≥ 4 mm (number of sites) | 28.6 ± 26.0 | 0.0–114.0 |
| CAL 4, 5 mm (number of sites) | 23.8 ± 19.5 | 0.0–91.0 |
| CAL ≥ 6 mm (number of sites) | 4.8 ± 9.4 | 0.0–58.0 |
Data are shown as mean ± SD and the range (minimal to maximum). BMI, body mass index; eGFR, estimated glomerular filtration rate; HbA1C, hemoglobin A1C (NGSP); O'Leary's PCR, O'Leary's plaque control record; BOP, bleeding on probing; PD, probing depth; CAL, clinical attachment level.