Table 1.
Participant characteristics by sedentary time
| Sedentary time (hours/day) | |||
| Low (<10.5) | High (≥10.5) | Overall | |
| Sample | 33 338 | 38 836 | 72 174 |
| Follow-up, years | 7.0 (0.8) | 6.9 (0.8) | 6.9 (0.8) |
| Age, years | 60.0 (7.8) | 62.1 (7.7) | 61.1 (7.8) |
| Steps, (median (IQR)) | 8362.2 (5883.0–11 791.9) | 4829.8 (3329.5–6834.1) | 6222.5 (4102.1–9225.4) |
| Sedentary time, (median (IQR)) | 9.6 (8.9–10.1) | 11.5 (11.0–12.2) | 10.6 (9.7–11.6) |
| Sleep, hours, (median (IQR)) | 7.8 (6.9–8.6) | 7.1 (6.0–7.9) | 7.4 (6.4–8.2) |
| Male, % | 12 780 (38.3) | 17 570 (45.2) | 30 350 (42.1) |
| Smoking history, % | |||
| Never | 19 880 (59.6) | 22 290 (57.4) | 42 170 (58.4) |
| Previous | 11 347 (34.0) | 13 700 (35.3) | 25 047 (34.7) |
| Current | 2111 (6.3) | 2846 (7.3) | 4957 (6.9) |
| Alcohol consumption, % | |||
| Never | 897 (2.7) | 1137 (2.9) | 2034 (2.8) |
| Previous | 776 (2.3) | 1116 (2.9) | 1892 (2.6) |
| Occasional | 6408 (19.2) | 8287 (21.3) | 14 695 (20.4) |
| Within guidelines | 12 576 (37.7) | 14 163 (36.5) | 26 739 (37.0) |
| Double guidelines | 8113 (24.3) | 8804 (22.7) | 16 917 (23.4) |
| More than double guidelines | 4568 (13.7) | 5329 (13.7) | 9897 (13.7) |
| Education, % | |||
| College/University | 14 485 (43.4) | 17 715 (45.6) | 32 200 (44.6) |
| A/AS | 4504 (13.5) | 5171 (13.3) | 9675 (13.4) |
| O levels | 6978 (20.9) | 7623 (19.6) | 14 601 (20.2) |
| CSE | 1624 (4.9) | 1322 (3.4) | 2946 (4.1) |
| NVQ/HND/HNC | 1708 (5.1) | 1988 (5.1) | 3696 (5.1) |
| Other | 4039 (12.1) | 5017 (12.9) | 9056 (12.5) |
| Diet, servings/day | 8.3 (4.5) | 8.0 (4.4) | 8.1 (4.4) |
| Parental history of CVD | 17 572 (52.7) | 21 260 (54.7) | 38 832 (53.8) |
| Parental history of cancer | 8200 (24.6) | 9820 (25.3) | 18 020 (25.0) |
| Ethnicity, % | |||
| Asian | 341 (1.0) | 473 (1.2) | 814 (1.1) |
| Black | 232 (0.7) | 390 (1.0) | 622 (0.9) |
| Mixed | 176 (0.5) | 237 (0.6) | 413 (0.6) |
| Other | 242 (0.7) | 348 (0.9) | 590 (0.8) |
| White | 32 347 (97.0) | 37 388 (96.3) | 69 735 (96.6) |
| Medication use, % | |||
| Cholesterol | 2859 (8.6) | 5150 (13.3) | 8009 (11.1) |
| Blood pressure | 3549 (10.6) | 6431 (16.6) | 9980 (13.8) |
| Insulin | 147 (0.4) | 272 (0.7) | 419 (0.6) |
| Biomarkers | |||
| Glycated haemoglobin | 34.7 (4.6) | 35.5 (5.8) | 35.1 (5.3) |
| High density lipoprotein | 1.5 (0.4) | 1.5 (0.4) | 1.5 (0.4) |
| Low density lipoprotein | 3.6 (0.8) | 3.6 (0.8) | 3.6 (0.8) |
| Triglycerides | 1.6 (0.9) | 1.7 (1.0) | 1.6 (1.0) |
| Self-rated health, % | |||
| Excellent | 8554 (25.7) | 8333 (21.5) | 16 887 (23.4) |
| Good | 20 393 (61.2) | 23 481 (60.5) | 43 874 (60.8) |
| Fair | 3887 (11.7) | 6112 (15.7) | 9999 (13.9) |
| Poor | 466 (1.4) | 852 (2.2) | 1318 (1.8) |
| Blood pressure, mm Hg | |||
| Systolic | 136.5 (19.0) | 139.3 (19.2) | 138.0 (19.1) |
| Diastolic | 80.8 (10.5) | 82.3 (10.6) | 81.6 (10.5) |
| Body mass index, kg/m2 | 25.7 (4.1) | 27.2 (4.6) | 26.5 (4.5) |
| Waist circumference, cm | |||
| Male | 92.8 (9.8) | 96.4 (11.0) | 94.9 (10.6) |
| Female | 80.2 (10.7) | 84.4 (12.1) | 82.4 (11.6) |
Values represent mean (SD) unless stated otherwise.
CVD, cardiovascular disease; HNC, higher national certificate; HND, higher National diploma; NVQ, national vocational qualification.