Table 1 Baseline characteristics of the study population
Variable | Total (N = 4591) | Without periodontitis (N = 3323) | With Periodontitis (N = 1268) | p Value* |
|---|---|---|---|---|
Age(year) | 53.9(11) | 52.8(10.8) | 56.9(10.9) |  < 0.001 |
Sex | ||||
 Men | 3146 | 2125 | 1021 |  < 0.001 |
 Women | 1445 | 1198 | 247 |  |
BMI | 25.5(3.2) | 25.4(3.2) | 25.8(3.2) |  < 0.001 |
Education level | ||||
 Below high school | 248 | 163 | 85 | 0.024 |
 High school or above | 2133 | 1552 | 581 |  |
Current smoking | ||||
 Yes | 752 | 522 | 230 | 0.033 |
 No | 1506 | 1111 | 395 |  |
Current drinking | ||||
 Yes | 1285 | 909 | 376 | 0.09 |
 No | 901 | 668 | 233 |  |
Physical activity | ||||
 None or mild | 1048 | 760 | 288 | 0.98 |
 Moderate or higher | 1134 | 824 | 310 |  |
Hypertension | ||||
 Yes | 1816 | 1249 | 567 |  < 0.001 |
 No | 2775 | 2074 | 701 |  |
Diabetes | ||||
 Yes | 426 | 260 | 166 |  < 0.001 |
 No | 4165 | 3063 | 1102 |  |
TG (mmol/L) | 1.6(1.3) | 1.6(1.3) | 1.7(1.4) |  < 0.001 |
TC (mmol/L) | 4.8(0.9) | 4.8(0.9) | 4.8(0.9) | 0.45 |
HDL-c (mmol/L) | 1.3(0.3) | 1.3(0.4) | 1.3(0.3) |  < 0.001 |
LDL-c (mmol/L) | 3.1(0.8) | 3.1(0.8) | 3.1(0.8) | 0.90 |
UA (µmol/L) | 344.1(85.8) | 340.7(86.4) | 353.0(83.6) |  < 0.001 |
GLB (g/L) | 26.4(3.4) | 26.3(3.4) | 26.5(3.3) | 0.051 |
CREA (μmol/L) | 75.8(16.1) | 74.8(15.3) | 78.3 (17.9) |  < 0.001 |
ALT (U/L) | 21.1(12.2) | 21.1(12.2) | 21.2(12.2) | 0.18 |
AST (U/L) | 20.1(7.0) | 20.1(7.0) | 20.2(7.1) | 0.63 |
CRP (mg/L) | 1.3(2.7) | 1.3(2.9) | 1.3(2.0) | 0.17 |
HGB (g/L) | 150.7(15.4) | 149.6(15.7) | 153.5(14.1) |  < 0.001 |
TP (g/L) | 72.7(3.9) | 72.6(3.9) | 72.8(3.9) | 0.34 |