Table 1 Sample characteristics by sleep restriction-rebound patterns
From: Acute sleep rebound following sleep restriction is associated with reduced mortality risk
Sample characteristics | Overall (N = 85,618) | Sleep restriction-rebound patterns | ||||
|---|---|---|---|---|---|---|
Regular sleep (N = 61,722) | SR, no rebound (N = 7734) | SR, rebound (N = 7241) | Severe SR, no rebound (N = 5110) | Severe SR, rebound (N = 3811) | ||
Sleep duration, mean (SD), h | 6.43 (0.95) | 6.73 (0.75) | 5.50 (0.82) | 6.26 (0.76) | 4.87 (0.88) | 5.91 (0.91) |
SR duration, mean (SD), h | NA | NA | 2.96 (0.28) | 2.94 (0.28) | 5.10 (1.67) | 4.76 (1.45) |
Sleep rebound duration, mean (SD), h | NA | NA | −0.99 (0.68) | 0.93 (0.71) | −1.09 (0.68) | 1.07 (0.87) |
Baseline sleep duration, mean (SD), h | 6.62 (0.84) | 6.73 (0.75) | 6.17 (0.95) | 6.66 (0.85) | 5.88 (1.01) | 6.61 (0.999) |
Age, mean (SD), years | 61.84 (7.84) | 61.41 (7.89) | 62.87 (7.63) | 63.19 (7.48) | 62.87 (7.62) | 62.81 (7.68) |
Physical activity, mean (SD), MET-min/week | 2524.87 (2429.06) | 2535.46 (2407.27) | 2552.33 (2551.78) | 2489.32 (2418.66) | 2446.71 (2488.94) | 2466.10 (2468.90) |
TDI, mean (SD) | −1.74 (2.80) | −1.82 (2.75) | −1.47 (2.99) | −1.73 (2.80) | −1.34 (3.04) | −1.58 (2.94) |
Sex, male, N (%) | 37,277 (43.54) | 27,372 (44.35) | 3429 (44.34) | 2829 (39.07) | 2271 (44.44) | 1376 (36.11) |
Ethnicity, white, N (%) | 82,774 (97.01) | 59,912 (97.38) | 7351 (95.41) | 7003 (97.14) | 4835 (94.93) | 3673 (96.81) |
Employment status, not employed, N (%) | 34,026 (39.82) | 23,316 (37.84) | 3302 (42.83) | 3389 (46.89) | 2307 (45.25) | 1712 (45.06) |
Education, college or university degree, N (%) | 37,263 (43.85) | 27,449 (44.78) | 3235 (42.19) | 3017 (42.00) | 2060 (40.75) | 1502 (39.86) |
BMI, N (%) | ||||||
Underweight/normal | 34,012 (39.81) | 25,746 (41.79) | 2558 (33.15) | 2770 (38.36) | 1542 (30.25) | 1396 (36.74) |
Overweight | 35,255 (41.26) | 25,568 (41.51) | 3137 (40.66) | 2963 (41.03) | 2061 (40.43) | 1526 (40.16) |
Obese | 16,169 (18.93) | 10,287 (16.70) | 2021 (26.19) | 1488 (20.61) | 1495 (29.33) | 878 (23.11) |
Smoking status, N (%) | ||||||
Never | 48,873 (57.23) | 36,020 (58.51) | 4061 (52.65) | 4025 (55.69) | 2640 (51.81) | 2127 (56.02) |
Current | 5583 (6.54) | 3658 (5.94) | 647 (8.39) | 483 (6.68) | 520 (10.20) | 275 (7.24) |
Previous | 30,944 (36.23) | 21,889 (35.55) | 3005 (38.96) | 2719 (37.62) | 1936 (37.99) | 1395 (36.74) |
Alcohol frequency, N (%) | ||||||
Occasional/never | 12,960 (15.15) | 8734 (14.16) | 1355 (17.54) | 1126 (15.56) | 1051 (20.59) | 694 (18.23) |
1–3 times per month/1–2 times per week | 30,948 (36.17) | 22,645 (36.71) | 2669 (34.55) | 2526 (34.91) | 1730 (33.89) | 1378 (36.20) |
3–4 times per week | 22,375 (26.15) | 16,552 (26.84) | 1928 (24.95) | 1840 (25.43) | 1177 (23.06) | 878 (23.06) |
Daily | 19,268 (22.52) | 13,747 (22.29) | 1774 (22.96) | 1743 (24.09) | 1147 (22.47) | 857 (22.51) |
Night shift work, N (%) | 3236 (3.78) | 2092 (3.39) | 336 (4.34) | 291 (4.02) | 281 (5.50) | 236 (6.19) |
Early chronotype, N (%) | 48,836 (63.42) | 35,425 (63.91) | 4345 (62.23) | 4092 (62.61) | 2835 (61.32) | 2139 (62.29) |
Sleep duration SD, >2 h, N (%) | 5010 (5.85) | 305 (0.49) | 532 (6.88) | 1020 (14.09) | 1126 (22.04) | 2027 (53.19) |
