Table 2 Characteristics of participants according to chronic periodontitis severity
From: Chronic periodontitis and community-acquired pneumonia: a population-based cohort study
| Â | Non-CP | Chronic periodontitis | Â | Â | Â |
|---|---|---|---|---|---|
Mild CP | Moderate CP | Severe CP | p value | ||
Number of subjects, n, (%) | 254,219 (69.9) | 31,104 (8.6) | 16,303 (4.5) | 61,915 (17.0) | Â |
Number of CAP cases, n, (%) | 10,349 (69.7) | 1123 (7.5) | 568 (3.8) | 2798 (18.9) | Â |
Age, years, mean (SD) | 57.6 (8.8) | 57.3 (8.2) | 56.3 (7.6) | 59.1 (8.7) | < 0.001 |
Sex, % | |||||
 Male | 52.6 | 53.0 | 52.8 | 51.8 | < 0.001 |
 Female | 47.4 | 47.0 | 47.2 | 48.2 |  |
Household income, quartile, % | |||||
 1st (highest) | 25.0 | 24.9 | 24.6 | 24.4 | 0.067 |
 2nd | 25.3 | 25.6 | 25.5 | 25.3 |  |
 3rd | 21.7 | 21.8 | 22.2 | 22.3 |  |
 4th (lowest) | 28.0 | 27.7 | 27.7 | 28.0 |  |
Smoking status, % | |||||
 Never | 70.7 | 70.6 | 70.1 | 71.6 | < 0.001 |
 Former | 8.7 | 8.7 | 9.1 | 8.6 |  |
 Current | 20.6 | 20.7 | 20.8 | 19.8 |  |
Alcohol consumption, per week, % | |||||
 < 3 times | 88.9 | 89.0 | 88.8 | 88.8 | 0.811 |
 ≥ 3 times | 11.1 | 11.0 | 11.2 | 11.2 |  |
Physical exercise, per week, % | |||||
 < 3 times | 78.4 | 78.3 | 78.0 | 78.5 | 0.556 |
 ≥ 3 times | 21.6 | 21.7 | 22.0 | 21.5 |  |
CCI, % | |||||
 0 | 34.8 | 35.0 | 36.5 | 32.8 | < 0.001 |
 1–2 | 50.8 | 50.9 | 50.3 | 51.4 |  |
 ≥ 3 | 14.4 | 14.1 | 13.2 | 15.8 |  |
BMI, kg/m2, mean (SD) | 24.0 (3.0) | 24.1 (2.9) | 24.1 (2.9) | 24.0 (3.0) | 0.022 |
Fasting serum glucose level, mg/dL, mean (SD) | 99.4 (32.4) | 99.5 (32.6) | 99.1 (32.8) | 99.9(32.9) | 0.002 |
Total cholesterol level, mg/dL, mean (SD) | 200.4 (37.9) | 201.0 (37.9) | 200.4 (37.7) | 200.7 (38.3) | 0.079 |