Table 1.
Baseline characteristics of participants by sedentary time.
| Characteristics | Total | Sedentary time (h/day) |
P value | |||
|---|---|---|---|---|---|---|
| ≤ 2.0 | 2.1-4.0 | 4.1-6.0 | >6 | |||
| Total | 360,047 | 42,336 (11.8) | 135,486 (37.6) | 115,191 (32.0) | 67,034 (18.6) | |
| Sex | <0.001 | |||||
| Male | 163,732 (45.5) | 14,454 (34.1) | 52,927 (39.1) | 55,582 (48.3) | 40,769 (60.8) | |
| Female | 196,315 (54.5) | 27,882 (65.9) | 82,559 (60.9) | 52,927 (39.1) | 26,265 (39.2) | |
| Age (mean, SD) | 55.8 (8.1) | 54.7 (8.1) | 55.5 (8.1) | 56.7 (8.0) | 56.0 (8.1) | <0.001 |
| Townsend deprivation index | <0.001 | |||||
| 1 (Least deprived) | 72,330 (20.1) | 6986 (16.5) | 28,362 (20.9) | 24,642 (21.4) | 12,340 (18.4) | |
| 2 | 71,775 (19.9) | 7224 (17.1) | 27,607 (20.4) | 24,240 (21.0) | 12,704 (18.9) | |
| 3 | 72,131 (20.0) | 7724 (18.2) | 27,274 (20.1) | 23,792 (20.7) | 13,341 (19.9) | |
| 4 | 72,043 (20.0) | 9177 (21.7) | 27,156 (20.0) | 22,181 (19.3) | 13,529 (20.2) | |
| 5 (Most deprived) | 71,768 (19.9) | 11,225 (26.5) | 25,087 (18.5) | 20336 (17.6) | 15,120 (22.6) | |
| Ethnicity | <0.001 | |||||
| White | 342,787 (95.2) | 39,734 (93.8) | 129,928 (95.9) | 110,523 (95.9) | 62,602 (93.4) | |
| Black | 5153 (1.4) | 626 (1.5) | 1370 (1.0) | 1432 (1.2) | 1725 (2.6) | |
| South Asian | 7052 (2.0) | 1156 (2.7) | 2501 (1.8) | 1853 (1.6) | 1542 (2.3) | |
| Mixed background | 5055 (1.4) | 820 (1.9) | 1687 (1.3) | 1383 (1.2) | 1165 (1.7) | |
| Employment status | <0.001 | |||||
| Worked | 223,180 (62.0) | 29,323 (69,3) | 88,241 (65.1) | 65,525 (56.9) | 40,091 (59.8) | |
| Retired | 110,024 (30.6) | 9519 (22.5) | 38,229 (28.2) | 41,431 (36.0) | 20,845 (31,1) | |
| Unemployed | 21,629 (6.0) | 2759 (6.5) | 7183 (5.3) | 6668 (5.8) | 5019 (7.5) | |
| Others | 5214 (1.5) | 735 (1.7) | 1833 (1.4) | 1567 (1.4) | 1079 (1.6) | |
| Education level | <0.001 | |||||
| College or university degree | 130,303 (36.2) | 21,334 (50.4) | 53,830 (39.7) | 36,394 (31.6) | 18,745 (28.0) | |
| Professional qualifications | 180,471 (50.1) | 16,972 (40.1) | 65,929 (48.7) | 60,987 (52.9) | 36,583 (54.6) | |
| Others | 49,273 (13.7) | 4030 (9.5) | 15,727 (11.6) | 17,810 (15.5) | 11,706 (17.5) | |
| Smoking status | <0.001 | |||||
| Never | 204,100 (56.7) | 26,546 (62.7) | 80,612 (59.5) | 63,268 (54.9) | 33,674 (50.2) | |
| Former | 121,038 (33.6) | 12,182 (28.8) | 43,229 (31.9) | 40,744 (35.4) | 24,883 (37.1) | |
| Current | 34,909 (9.7) | 3608 (8.5) | 11,645 (8.6) | 11,179 (9.7) | 8477 (12.7) | |
| Alcohol intake (g/day; mean, SD) | 15.2 (18.0) | 13.1 (17.0) | 14.4 (16.7) | 15.8 (18.2) | 17.1 (20.5) | <0.001 |
| Hypertension | 247,173 (68.7) | 25,282 (59.7) | 89,791 (66.3) | 82,487 (71.6) | 49,613 (74.0) | <0.001 |
| SBP (mmHg; mean, SD) | 138 (18) | 134 (19) | 137 (19) | 139 (19) | 139 (18) | <0.001 |
| DBP (mmHg; mean, SD) | 82 (10) | 80 (10) | 82 (10) | 83 (10) | 84 (10) | <0.001 |
| BMI (kg/m2; mean, SD) | 27.0 (4.5) | 25.3 (4.1) | 26.4 (5.3) | 27.5 (4.4) | 28.5 (4.8) | <0.001 |
| Sleep duration (h/day; mean, SD) | 7.15 (1.03) | 7.16 (1.01) | 7.16 (0.98) | 7.17 (1.03) | 7.11 (1.11) | <0.001 |
| LPA (h/day; mean, SD) | 0.80 (1.09) | 0.86 (1.19) | 0.83 (1.13) | 0.80 (1.10) | 0.68 (0.92) | <0.001 |
| MPA (h/day; mean, SD) | 0.58 (0.94) | 0.63 (1.03) | 0.61 (0.98) | 0.59 (0.94) | 0.49 (0.79) | <0.001 |
| VPA (h/day; mean, SD) | 0.20 (0.38) | 0.22 (0.40) | 0.21 (0.39) | 0.20 (0.37) | 0.18 (0.35) | <0.001 |
Data are n (%), unless otherwise specified.
Abbreviations: BMI, body mass index; SD, standard deviation; SBP, systolic blood pressure; DBP, diastolic blood pressure; MPA, moderate physical activity; VPA, vigorous physical activity; LPA, light physical activity.