Table 1 Baseline characteristics stratified by sleep duration
|  | Sleep duration (h) | Total (n = 6298) | p | ||||
|---|---|---|---|---|---|---|---|
|  | ≤5 | 6 | 7 | 8 | ≥ 9 | ||
(n = 682) | (n = 1282) | (n = 1522) | (n = 2185) | (n = 627) | |||
Age (years) | 62.01 (9.68) | 60.77 (10.50) | 57.65 (11.44) | 56.26 (12.01) | 57.42 (12.06) | 58.25 (11.53) | <0.001 |
Male (%) | 204 (29.91%) | 435 (33.93%) | 583 (38.3%) | 879 (40.23%) | 233 (37.16%) | 2334 (37.06%) | <0.001 |
Married (%) | 595 (87.24%) | 1134 (88.46%) | 1383 (90.87%) | 1975 (90.39%) | 556 (88.68%) | 5643 (89.60%) | <0.001 |
Current smoking (%) | 92 (13.49%) | 185 (14.43%) | 276 (18.13%) | 416 (19.04%) | 123 (19.62%) | 1092 (17.34%) | <0.001 |
Alcohol consumption (%) | 80 (11.73%) | 137 (10.69%) | 185 (12.16%) | 296 (13.55%) | 80 (12.76%) | 778 (12.35%) | 0.161 |
Tea consumption (%) | 138 (20.23%) | 329 (25.66%) | 411 (27.00%) | 630 (28.83%) | 183 (29.19%) | 1691 (26.85%) | <0.001 |
Physical activity (%) | 189 (27.71%) | 367 (28.63%) | 400 (26.28%) | 557 (25.49%) | 165 (26.32%) | 1678 (26.64%) | 0.331 |
Hypertension (%) | 304 (44.57%) | 595 (46.41%) | 619 (40.67%) | 865 (39.59%) | 243 (38.76%) | 2626 (41.70%) | <0.001 |
Type 2 diabetes (%) | 150 (21.99%) | 276 (21.53%) | 287 (18.86%) | 390 (17.85%) | 129 (20.57%) | 1232 (19.56%) | 0.030 |
Dyslipidemia (%) | 365 (53.52%) | 617 (48.13%) | 666 (43.76%) | 1007 (46.09%) | 309 (49.28%) | 2964 (47.06%) | <0.001 |
Poor sleep quality (%) | 99 (14.52%) | 57 (4.45%) | 24 (1.58%) | 30 (1.37%) | 13 (2.07%) | 223 (3.54%) | <0.001 |
BMI (kg/m2) | 24.92 (3.31) | 25.12 (3.44) | 25.18 (4.61) | 25.04 (3.41) | 24.94 (3.66) | 25.07 (3.75) | 0.487 |
CRP (mg/L) | 0.27 (0.07, 0.93) | 0.25 (0.07, 0.90) | 0.23 (0.07, 0.87) | 0.24 (0.07, 0.94) | 0.27 (0.07, 1.01) | 0.25 (0.07, 0.94) | 0.611 |