Table 1 Baseline characteristics of study participants according to the weekend catch-up sleep durations in men using adjusted one-way ANOVA for continuous variables and Rao-scott chi-square test for categorical variables.
Variables (WCUS) (h) | Non-WCUS (≤ 0 h) | Short WCUS (> 0 h, ≤ 1 h) | Medium WCUS (> 1 h, ≤ 2 h) | Long WCUS (> 2 h) | P-value |
|---|---|---|---|---|---|
Total (n = 6959) (0.70 \(\pm\) 0.02) | 4203 (55.1) | 1207 (18.9) | 890 (14.9) | 659 (11.1) | |
Age (years) | 49.84 \(\pm\) 0.33 | 41.79 \(\pm\) 0.49 | 39.70 \(\pm\) 0.48 | 38.64 \(\pm\) 0.55 | < 0.001 |
Body mass index (kg/m2) | |||||
< 23 (0.74 \(\pm\) 0.03) | 1378 (32.3) | 391 (32.2) | 293 (33.7) | 222 (33.5) | 0.815 |
≥ 23, < 25 (0.70 \(\pm\) 0.04) | 1092 (25.3) | 302 (24.7) | 216 (23.8) | 177 (26.8) | |
≥ 25 (0.67 \(\pm\) 0.03) | 1733 (42.4) | 514 (43.1) | 381 (42.5) | 260 (39.7) | |
Smoking status | |||||
Never smoker (0.80 \(\pm\) 0.04) | 896 (23.1) | 343 (30.6) | 253 (31.1) | 171 (26.5) | < 0.001 |
Past smoker (0.54 \(\pm\) 0.03) | 1913 (40.9) | 453 (34.8) | 301 (30.4) | 189 (25.7) | |
Current smoker (0.79 \(\pm\) 0.04) | 1394 (36.0) | 411 (34.5) | 336 (38.5) | 299 (47.8) | |
High-risk Drinking | |||||
No (0.71 \(\pm\) 0.02) | 3376 (78.2) | 978 (81.8) | 694 (78.9) | 520 (78.0) | 0.170 |
Yes (0.66 \(\pm\) 0.05) | 827 (21.8) | 229 (18.2) | 196 (21.1) | 139 (22.0) | |
Physical activity (metabolic equivalent of task) | |||||
< 600 (0.62 \(\pm\) 0.03) | 2419 (54.3) | 570 (44.0) | 418 (45.3) | 314 (46.9) | < 0.001 |
≥ 600, < 3,000 (0.79 \(\pm\) 0.03) | 1448 (36.4) | 537 (46.0) | 386 (44.3) | 273 (41.7) | |
≥ 3,000 (0.73 \(\pm\) 0.07) | 336 (9.3) | 100 (10.1) | 86 (10.5) | 72 (11.4) | |
Household income | |||||
Low (0.41 \(\pm\) 0.05) | 959 (18.6) | 107 (7.3) | 62 (8.3) | 47 (7.2) | < 0.001 |
Low-middle (0.70 \(\pm\) 0.04) | 1056 (23.9) | 247 (21.2) | 204 (22.1) | 163 (24.0) | |
High-middle (0.73 \(\pm\) 0.04) | 1075 (28.1) | 389 (33.9) | 286 (32.6) | 216 (32.4) | |
High (0.80 \(\pm\) 0.03) | 1113 (29.4) | 464 (37.6) | 338 (37.0) | 233 (36.5) | |
Education level | |||||
\(\le\) Middle school (0.31 \(\pm\) 0.04) | 1363 (24.5) | 155 (9.5) | 81 (6.4) | 91 (10.3) | < 0.001 |
High school (0.74 \(\pm\) 0.04) | 1393 (36.3) | 396 (34.5) | 320 (38.5) | 250 (40.1) | |
\(\ge\) College (0.81 \(\pm\) 0.03) | 1447 (39.2) | 656 (56.0) | 489 (55.1) | 318 (49.6) | |
Marital status | |||||
Single \((0.95\pm 0.04)\) | 681 (23.7) | 321 (32.7) | 264 (36.5) | 229 (40.5) | < 0.001 |
Married \((0.61\pm 0.02)\) | 345 (6.7) | 40 (2.9) | 27 (2.4) | 28 (3.6) | |
Separated/divorced/widowed (0.42 \(\pm\) 0.07) | 3177 (69.6) | 846 (64.4) | 599 (61.1) | 402 (55.9) | |
Employed | |||||
No (0.47 \(\pm\) 0.04) | 1453 (29.7) | 220 (18.5) | 120 (15.7) | 89 (14.7) | < 0.001 |
Yes (0.77 \(\pm\) 0.02) | 2750 (70.3) | 987 (81.5) | 770 (84.3) | 570 (85.3) | |
Chronotype | |||||
Morning (0.26 \(\pm\) 0.03) | 1057 (18.7) | 108 (6.8) | 46 (3.8) | 40 (5.0) | < 0.001 |
Intermediate (0.65 \(\pm\) 0.02) | 2512 (61.4) | 776 (63.4) | 578 (62.1) | 368 (52.6) | |
Evening (1.03 \(\pm\) 0.05) | 634 (20.0) | 323 (29.8) | 266 (34.1) | 251 (42.4) | |
MSFsc (local time) | 3:40 am \(\pm\) 3.1 min | 4:13 am \(\pm\) 4.7 min | 4:25 am \(\pm\) 4.1 min | 5:02 am \(\pm\) 8.7 min | < 0.001 |
Weekday sleep duration (h) | 7.26 \(\pm\) 0.02 | 6.94 \(\pm\) 0.03 | 6.61 \(\pm\) 0.04 | 6.08 \(\pm\) 0.06 | 0.007 |
WCUS duration (h) | -0.19 \(\pm\) 0.01 | 0.81 \(\pm\) 0.01 | 1.76 \(\pm\) 0.01 | 3.48 \(\pm\) 0.05 | < 0.001 |
