Table 1 Baseline characteristics of participants
From: Interaction of sleep duration and depression on cardiovascular disease: a retrospective cohort study
Variables | Total (n=13488) | Sleep duration group | P | Depression group | P | |||
|---|---|---|---|---|---|---|---|---|
Short sleep duration (n=3772) | Normal sleep duration (n=8485) | Long sleep duration (n=1231) | Non-depression (n=9397) | Depression (n=4091) | ||||
Age, years, Mean ± SD | 57.89 ± 9.87 | 59.66 ± 9.94 | 56.91 ± 9.53 | 59.27 ± 10.96 | <0.001 | 57.48 ± 9.84 | 58.84 ± 9.87 | <0.001 |
Sex, n (%) | Â | Â | Â | Â | <0.001 | Â | Â | <0.001 |
 Male | 6623 (49.10) | 1632 (43.27) | 4437 (52.29) | 554 (45.00) |  | 5042 (53.66) | 1581 (38.65) |  |
 Female | 6865 (50.90) | 2140 (56.73) | 4048 (47.71) | 677 (55.00) |  | 4355 (46.34) | 2510 (61.35) |  |
Education, n (%) | Â | Â | Â | Â | <0.001 | Â | Â | <0.001 |
 Illiterate | 810 (6.01) | 282 (7.48) | 418 (4.93) | 110 (8.94) |  | 498 (5.30) | 312 (7.63) |  |
 Primary school | 11616 (86.12) | 3258 (86.37) | 7313 (86.19) | 1045 (84.89) |  | 8055 (85.72) | 3561 (87.04) |  |
 Middle school | 695 (5.15) | 163 (4.32) | 485 (5.72) | 47 (3.82) |  | 531 (5.65) | 164 (4.01) |  |
 High school or above | 367 (2.72) | 69 (1.83) | 269 (3.17) | 29 (2.36) |  | 313 (3.33) | 54 (1.32) |  |
Marital status, n (%) | Â | Â | Â | Â | <0.001 | Â | Â | <0.001 |
 Married | 11360 (84.22) | 3004 (79.64) | 7345 (86.56) | 1011 (82.13) |  | 8117 (86.38) | 3243 (79.27) |  |
 Others | 2128 (15.78) | 768 (20.36) | 1140 (13.44) | 220 (17.87) |  | 1280 (13.62) | 848 (20.73) |  |
Deposit, n (%) | Â | Â | Â | Â | <0.001 | Â | Â | <0.001 |
 CN¥ | 9519 (70.57) | 2829 (75.00) | 5744 (67.70) | 946 (76.85) |  | 6262 (66.64) | 3257 (79.61) |  |
 ≥2000 CN¥ | 3969 (29.43) | 943 (25.00) | 2741 (32.30) | 285 (23.15) |  | 3135 (33.36) | 834 (20.39) |  |
 Disability, (Yes), n (%) | 347 (2.57) | 127 (3.37) | 190 (2.24) | 30 (2.44) | 0.001 | 184 (1.96) | 163 (3.98) | <0.001 |
Exercise time, h/day, n (%) | Â | Â | Â | Â | 0.005 | Â | Â | <0.001 |
 No exercise | 8073 (59.85) | 2256 (59.81) | 5047 (59.48) | 770 (62.55) |  | 5630 (59.91) | 2443 (59.72) |  |
 hday | 3274 (24.27) | 887 (23.52) | 2132 (25.13) | 255 (20.71) |  | 2355 (25.06) | 919 (22.46) |  |
 ≥2 h/day | 2141 (15.87) | 629 (16.68) | 1306 (15.39) | 206 (16.73) |  | 1412 (15.03) | 729 (17.82) |  |
Drinking, n (%) | 5133 (38.06) | 1337 (35.45) | 3394 (40.00) | 402 (32.66) | <0.001 | 3818 (40.63) | 1315 (32.14) | <0.001 |
Napa, (min/day), M (Q1, Q3) | 30.00 (0.00, 60.00) | 1.00 (0.00, 60.00) | 30.00 (0.00, 60.00) | 30.00 (0.00, 90.00) | <0.001 | 30.00 (0.00, 60.00) | 2.00 (0.00, 60.00) | <0.001 |
CKD, (Yes), n (%) | 270 (2.00) | 106 (2.81) | 145 (1.71) | 19 (1.54) | <0.001 | 149 (1.59) | 121 (2.96) | <0.001 |
Diabetes, (Yes), n (%) | 867 (6.43) | 271 (7.18) | 514 (6.06) | 82 (6.66) | 0.060 | 533 (5.67) | 334 (8.16) | <0.001 |
Dyslipidemia, (Yes), n (%) | 226 (1.68) | 77 (2.04) | 138 (1.63) | 11 (0.89) | 0.021 | 133 (1.42) | 93 (2.27) | <0.001 |
Hypertension, (Yes), n (%) | 3376 (25.03) | 972 (25.77) | 2035 (23.98) | 369 (29.98) | <0.001 | 2347 (24.98) | 1029 (25.15) | 0.828 |
Sleep disturbance | Â | Â | Â | Â | <0.001 | Â | Â | <0.001 |
 Rarely or none of the time (<1 day) | 7401 (54.87) | 1092 (28.95) | 5386 (63.48) | 923 (74.98) |  | 6444 (68.58) | 957 (23.39) |  |
 Some or a little of the time (1-2 days) | 1885 (13.98) | 510 (13.52) | 1248 (14.71) | 127 (10.32) |  | 1286 (13.69) | 599 (14.64) |  |
 Occasionally or a moderate amount of the time (3-4 days) | 1804 (13.37) | 699 (18.53) | 1025 (12.08) | 80 (6.50) |  | 787 (8.38) | 1017 (24.86) |  |
 Most or all of the time (5-7 days) | 2398 (17.78) | 1471 (39.00) | 826 (9.73) | 101 (8.20) |  | 880 (9.36) | 1518 (37.11) |  |
The use of hypnotics, (Yes), n (%) | 10 (0.07) | 4 (0.11) | 6 (0.07) | 0 (0.00) | 0.317 | 2 (0.02) | 8 (0.20) | 0.002 |
SBP, mmHg, Mean ± SD | 126.89 ± 19.27 | 127.53 ± 19.26 | 126.34 ± 19.01 | 128.70 ± 20.83 | <0.001 | 127.02 ± 19.05 | 126.59 ± 19.75 | 0.246 |
DBP, mmHg, Mean ± SD | 75.41 ± 11.17 | 75.10 ± 11.10 | 75.47 ± 11.15 | 75.95 ± 11.49 | 0.052 | 75.72 ± 11.17 | 74.70 ± 11.15 | <0.001 |
TG, mg/dl, M (Q1, Q3) | 119.47 (84.07, 182.30) | 115.93 (82.30, 173.45) | 119.47 (84.07, 185.84) | 123.01 (84.96, 185.84) | 0.004 | 119.47 (84.07, 184.07) | 117.70 (84.07, 178.76) | 0.243 |
HDL, mg/dl, Mean ± SD | 50.93 ± 11.57 | 52.11 ± 11.78 | 50.54 ± 11.44 | 50.05 ± 11.54 | <0.001 | 50.55 ± 11.35 | 51.80 ± 12.00 | <0.001 |
LDL, mg/dl, Mean ± SD | 100.80 ± 28.20 | 101.58 ± 27.67 | 100.55 ± 28.58 | 100.14 ± 27.12 | 0.120 | 100.98 ± 28.18 | 100.40 ± 28.25 | 0.275 |
TC, mg/dl, Mean ± SD | 183.57 ± 37.44 | 184.95 ± 37.09 | 183.16 ± 37.92 | 182.11 ± 35.04 | 0.019 | 183.40 ± 37.07 | 183.96 ± 38.27 | 0.431 |
GLU, mg/dl, Mean ± SD | 95.50 (88.29, 106.31) | 95.50 (88.29, 104.50) | 95.50 (88.29, 106.31) | 95.50 (86.49, 106.31) | 0.870 | 102.03 ± 31.11 | 102.61 ± 33.63 | 0.342 |
GHB, %, Mean ± SD | 5.91 ± 0.92 | 5.93 ± 0.94 | 5.90 ± 0.90 | 5.93 ± 0.94 | 0.240 | 5.90 ± 0.87 | 5.95 ± 1.02 | 0.003 |
CVD, (Yes), n (%) | 1563 (11.59) | 517 (13.71) | 891 (10.50) | 155 (12.59) | <0.001 | 923 (9.82) | 640 (15.64) | <0.001 |