Table 2.
Baseline characteristics of subjects and their survival rate at the 3-year follow-up.
| T1-2 (N = 138) | T3 (N = 69) | p value | |
|---|---|---|---|
| Baseline characteristics | |||
| Male | 83 (60.1%) | 52 (75.4%) | 0.03 |
| Age | 64.9 ± 12.0 | 68.2 ± 12.2 | 0.07 |
| Smoking | |||
| Non-smoker | 56 (40.6%) | 28 (40.6%) | 0.98 |
| Past-smoker | 61 (44.2%) | 31 (44.9%) | |
| Current smoker | 21 (15.2%) | 10 (14.5%) | |
| BMI (kg/m2) | 21.4 (19.3, 23.2) | 21.5 (191.1, 24.0) | 0.87 |
| Hemodialysis vintage (months) | 58 (26, 129) | 74 (37, 109) | 0.50 |
| Diabetes (%) | 60 (43.5%) | 41 (59.4%) | 0.02 |
| Duration of diabetes (years) | 18.2 ± 9.3 | 20.4 ± 9.2 | 0.25 |
| Prior CVD event (%) | 29 (21.0%) | 22 (31.9%) | 0.06 |
| Albumin (g/dL) | 3.5 (3.3, 3.7) | 3.5 (3.2, 3.7) | 0.20 |
| hsCRP (mg/dL) | 0.13 (0.04, 0.40) | 0.21 (0.08, 0.92) | 0.012 |
| Baseline dental health status | |||
| Number of remaining teeth | 24 (19, 27) | 17 (9, 23) | < 0.001 |
| Number of decayed teeth | 0 (0, 4) | 0 (0, 2) | 0.07 |
| Number of filled teeth | 10 (5, 13) | 5 (2, 8) | < 0.001 |
| DI-S | 0.5 (0.3, 0.8) | 1.7 (1.5, 2.0) | < 0.001 |
| Frequency of tooth brushing (/day) | 2 (1, 2) | 1 (1, 2) | < 0.001 |
| Use of interdental cleaning tools | 47 (34.1%) | 3 (4.3%) | < 0.001 |
| Dental care within 1 year | 84 (60.9%) | 28 (40.6%) | 0.008 |
| Periodontal disease | |||
| Healthy | 12 (8.7%) | 1 (1.4%) | 0.007 |
| Mild | 50 (36.2%) | 17 (24.6%) | |
| Moderate | 54 (39.1%) | 28 (40.6%) | |
| Severe | 22 (15.9%) | 23 (33.3%) | |
| PPD ≥ 4 mm (%) | 2.1 (0.0, 6.0) | 6.3 (2.0, 16.7) | < 0.001 |
| BOP (%) | 5.8 (2.4, 11.9) | 15.6 (6.7, 29.6) | < 0.001 |
| Number of P.gingivalis (/ml, log10) | 5.3 ± 1.0 | 5.1 ± 1.0 | 0.28 |
| 3-year follow up | |||
| Deceased | 14 (10.1%) | 24 (34.8%) | < 0.001 |
The subjects were divided into the top and lower two tertiles of DI-S score (T3 group vs. T1-2 group). Values are shown as n (%), mean ± SD, or med (25%, 75%) as appropriate.
BMI, body mass index; BOP, bleeding on probing; BP, blood pressure; CVD, cardiovascular disease; DI-S, simplified debris index; hsCRP, high-sensitivity C-reactive protein; PPD, probing pocket depth; T, tertile.