Table 2 Baseline characteristics for each cluster
| Â | Cluster 1 | Cluster 2 | Cluster 3 | Cluster 4 | p-value |
|---|---|---|---|---|---|
Young healthy | Middle aged | Middle aged obese | Elderly | ||
n = 266 | n = 245 | n = 435 | n = 376 | ||
Age, years | 31.7 ± 0.6 | 61.1 ± 0.6 | 56.9 ± 0.5 | 76.1 ± 0.5 | < 0.0001 |
Male, n (%) | 135 (50.8) | 180 (73.5) | 364 (83.7) | 181 (48.1) | < 0.0001 |
BMI, kg/m2 | 22.9 ± 0.2 | 22 ± 0.2 | 28.3 ± 0.2 | 22.3 ± 0.2 | < 0.0001 |
Smoking history, n (%) | 99 (37.2) | 117 (47.8) | 247 (56.8) | 134 (35.6) | < 0.0001 |
Hypertension, n (%) | 0 (0) | 13 (5.3) | 206 (47.4) | 230 (61.2) | < 0.0001 |
Diabetes mellitus, n (%) | 2 (0.8) | 56 (22.9) | 124 (28.5) | 81 (21.5) | < 0.0001 |
Malignancy, n (%) | 6 (2.3) | 13 (5.3) | 18 (4.1) | 62 (16.5) | < 0.0001 |
COPD, n (%) | 0 (0) | 31 (12.7) | 16 (3.7) | 17 (4.5) | < 0.0001 |
Hyperuricemia, n (%) | 4 (1.5) | 4 (1.6) | 98 (22.5) | 28 (7.5) | < 0.0001 |
Cardiovascular disease, n (%) | 1 (0.4) | 1 (0.4) | 47 (10.8) | 65 (17.3) | < 0.0001 |
Chronic liver disease, n (%) | 0 (0) | 4 (1.6) | 29 (6.7) | 10 (2.7) | < 0.0001 |
Chronic kidney disease, n (%) | 1 (0.4) | 14 (5.7) | 34 (7.8) | 42 (11.2) | < 0.0001 |