Table 1 Baseline characteristicsa by sleep duration, the Health Examinees-Gem (HEXA-G) study 2004–2013
From: Association between sleep duration and metabolic syndrome: a cross-sectional study
| Â | Sleep Duration | |||||
|---|---|---|---|---|---|---|
Total | < 6 h | 6 to < 8 h | 8 to < 10 h | ≥10 h | p-valueb | |
Men, N | 44,930 | 4906 (10.9) | 29,141 (64.9) | 10,213 (22.7) | 670 (1.5) | Â |
Age, years | 53.6 ± 8.4 | 54.1 ± 8.5 | 53.0 ± 8.3 | 54.7 ± 8.3 | 56.6 ± 7.8 | < 0.001 |
Education |  |  |  |  |  | < 0.001 |
 Middle school or below | 9672 (21.5) | 1149 (23.4) | 5461 (18.7) | 2794 (27.4) | 268 (40.0) |  |
 High school graduate | 18,390 (40.9) | 1967 (40.1) | 11,843 (40.6) | 4301 (42.1) | 279 (41.6) |  |
 College or above | 16,368 (36.4) | 1726 (35.2) | 11,511 (39.5) | 3015 (29.5) | 116 (17.3) |  |
Occupation |  |  |  |  |  | < 0.001 |
 Non-manual | 14,569 (32.4) | 1573 (32.1) | 10,311 (35.4) | 2587 (25.3) | 98 (14.6) |  |
 Manual | 20,960 (46.7) | 2341 (47.7) | 13,348 (45.8) | 4933 (48.3) | 338 (50.5) |  |
 Unemployed | 8440 (18.8) | 897 (18.3) | 4918 (16.9) | 2411 (23.6) | 214 (31.9) |  |
Married | 42,187 (93.9) | 4505 (91.8) | 27,417 (94.1) | 9643 (94.4) | 622 (92.8) | < 0.001 |
Current smokers | 18,732 (41.7) | 2132 (43.5) | 11,856 (40.7) | 4486 (43.9) | 258 (38.5) | 0.009 |
Current drinkers | 32,642 (72.7) | 3434 (70.0) | 21,539 (73.9) | 7209 (70.6) | 460 (68.7) | < 0.001 |
Regular exercisers | 25,671 (57.1) | 2642 (53.9) | 17,073 (58.6) | 5634 (55.2) | 322 (48.1) | < 0.001 |
Dietary intake (k/cal) | 1861.4 ± 562.6 | 1864.1 ± 591.3 | 1865.7 ± 552.2 | 1847.6 ± 571.4 | 1861.1 ± 651.2 | 0.048 |
Women, N | 88,678 | 11,277 (12.7) | 53,764 (60.6) | 22,124 (24.9) | 1513 (1.7) | Â |
Age, years | 52.3 ± 7.8 | 53.8 ± 7.7 | 52.0 ± 7.7 | 52.2 ± 7.9 | 52.2 ± 8.0 | < 0.001 |
Education |  |  |  |  |  | < 0.001 |
 Middle school or below | 32,325 (36.5) | 4842 (42.9) | 18,414 (34.3) | 8406 (38.0) | 663 (43.8) |  |
 High school graduate | 38,159 (43.0) | 4373 (38.8) | 23,673 (44.0) | 9488 (42.9) | 625 (41.3) |  |
 College or above | 17,209 (19.4) | 1905 (16.9) | 11,128 (20.7) | 3964 (17.9) | 212 (14.0) |  |
Occupation |  |  |  |  |  | < 0.001 |
 Non-manual | 11,558 (13.0) | 1356 (12.0) | 7873 (14.6) | 2232 (10.1) | 97 (6.4) |  |
 Manual | 22,701 (25.6) | 3296 (29.2) | 14,124 (26.3) | 4991 (22.6) | 290 (19.2) |  |
 Unemployed | 52,185 (58.9) | 6400 (56.8) | 30,475 (56.7) | 14,240 (64.4) | 1070 (70.7) |  |
Married | 76,725 (86.5) | 9301 (82.5) | 46,923 (87.3) | 19,237 (87.0) | 1264 (83.5) | < 0.001 |
Post-menopausal | 50,306 (56.7) | 7125 (63.2) | 30,034 (55.9) | 12,322 (55.7) | 825 (54.5) | < 0.001 |
Current smokers | 1896 (2.1) | 311 (2.8) | 970 (1.8) | 555 (2.5) | 60 (4.0) | < 0.001 |
Current drinkers | 27,104 (30.6) | 3358 (29.8) | 16,642 (31.0) | 6650 (30.1) | 454 (30.0) | 0.018 |
Regular exercisers | 45,371 (51.2) | 5384 (47.7) | 27,961 (52.0) | 11,312 (51.1) | 714 (47.2) | < 0.001 |
Dietary intake (k/cal) | 1711.6 ± 583.0 | 1674.0 ± 590.1 | 1714.1 ± 566.9 | 1721.7 ± 606.6 | 1753.6 ± 715.6 | < 0.001 |