Table 1 Baseline characteristics of participants by TV viewing time and computer using time in the UK Biobank Studya
Characteristics | Computer using time, hours/day | TV viewing time, hours/day | ||||||
|---|---|---|---|---|---|---|---|---|
0 | 0.5 to 1 | 2 to 3 | ≥ 4 | 0 to 1 | 2 | 3 | ≥ 4 | |
No. of participants | 129,605 | 238,711 | 80,675 | 24,193 | 97,510 | 127,448 | 112,080 | 136,146 |
Age (years) | 60.0 (12.0) | 57.0 (13.0) | 58.0 (13.0) | 55.0 (14.0) | 56.0 (13.0) | 56.0 (13.0) | 58.0 (12.0) | 61.0 (11.0) |
Sex (male, %) | 38.7 | 43.4 | 57.4 | 60.0 | 44.3 | 45.5 | 45.6 | 45.6 |
Race (White, %) | 94.3 | 95.9 | 92.9 | 90.3 | 93.4 | 94.6 | 95.3 | 95.2 |
BMI (kg/m2) | 26.9 (5.96) | 26.3 (5.46) | 27.4 (5.87) | 27.6 (6.09) | 26.3 (5.40) | 26.3 (5.40) | 27.0 (5.61) | 27.9 (6.07) |
Townson depretive index | -1.71 (4.70) | -2.48 (3.57) | -2.06 (4.30) | -1.70 (4.76) | -2.39 (3.75) | -2.39 (3.75) | -2.35 (3.79) | -1.89 (4.53) |
PA (MET × hour/week) | 1200.0 (3186.0) | 1386.0 (2586.0) | 1226.5 (2499.0) | 1459.0 (2571.0) | 1390.0 (2677.5) | 1392.0 (2677.5) | 1293.0 (2772.0) | 1039.5 (2754.0) |
Daily-life activities (min/day) | 15.0 (39.6) | 20.4 (41.8) | 18.2 (41.8) | 21.4 (42.3) | 20.4 (42.9) | 0.68 (1.43) | 19.3 (40.7) | 12.9 (39.6) |
Walking for pleasure (min/day) | 6.43 (25.7) | 6.43 (25.5) | 6.43 (25.7) | 8.57 (25.0) | 6.43 (25.5) | 0.23 (0.85) | 6.43 (25.7) | 6.43 (25.7) |
Light DIY (min/day) | 0.00 (6.43) | 2.14 (12.9) | 1.07 (12.9) | 3.00 (12.9) | 1.61 (12.9) | 0.05 (0.43) | 0.54 (9.64) | 0.00 (6.43) |
Heavy DIY (min/day) | 0.00 (2.14) | 0.00 (6.43) | 0.00 (6.43) | 0.00 (6.43) | 0.00 (6.43) | 0.00 (0.21) | 0.00 (4.29) | 0.00 (3.00) |
Structured exercise (min/day) | 0.00 (11.6) | 3.21 (25.7) | 0.75 (17.1) | 6.43 (25.7) | 3.21 (25.7) | 0.11 (0.86) | 0.54 (17.1) | 0.00 (9.64) |
Strenuous sports (min/day) | 0.00 (0.00) | 0.00 (0.00) | 0.00 (0.00) | 0.00 (0.00) | 0.00 (0.00) | 0.00 (0.00) | 0.00 (0.00) | 0.00 (0.00) |
Other exercises (min/day) | 0.00 (8.57) | 3.20 (21.4) | 0.00 (12.9) | 4.29 (25.7) | 2.14 (21.4) | 0.07 (0.71) | 0.00 (12.9) | 0.00 (8.57) |
Smoking status (%) | ||||||||
Current smoker | 13.6 | 8.01 | 10.1 | 12.9 | 8.19 | 8.80 | 9.92 | 13.0 |
Ex-smoker | 32.6 | 34.7 | 38.4 | 36.9 | 31.1 | 33.2 | 35.8 | 38.4 |
Non-smoker | 53.8 | 57.3 | 51.5 | 50.2 | 60.7 | 58.1 | 54.3 | 48.7 |
Drinking status (%) | ||||||||
Current drinker | 88.9 | 94.4 | 92.5 | 91.5 | 92.0 | 93.2 | 93.3 | 91.2 |
Ex-drinker | 4.55 | 2.58 | 3.75 | 4.13 | 3.31 | 2.91 | 2.94 | 4.29 |
Non-drinker | 6.54 | 3.07 | 3.79 | 4.37 | 4.74 | 3.86 | 3.80 | 4.49 |
Education level (college or higher, %) | 15.3 | 38.4 | 41.3 | 44.9 | 54.3 | 39.0 | 27.6 | 16.3 |
Living alone (%) | 23.3 | 15.2 | 18.7 | 19.6 | 18.0 | 16.3 | 17.3 | 21.0 |
Visiting friends (≥ once a week, %) | 50.5 | 78.9 | 75.2 | 71.4 | 57.7 | 78.0 | 79.3 | 79.8 |
Healthy diet score (%) | ||||||||
0–1 | 6.12 | 5.11 | 6.58 | 7.37 | 4.27 | 4.99 | 5.62 | 7.64 |
2–3 | 43.3 | 42.2 | 44.7 | 44.9 | 38.5 | 41.5 | 43.4 | 47.5 |
4–5 | 50.6 | 52.7 | 48.8 | 47.7 | 57.2 | 53.5 | 51.0 | 44.9 |
Individual history of disease (%) | ||||||||
Hypertension | 29.7 | 22.6 | 27.8 | 27.6 | 18.1 | 22.4 | 27.0 | 33.1 |
Diabetes | 4.69 | 2.88 | 4.86 | 5.49 | 2.35 | 2.89 | 3.78 | 5.85 |
Family history of disease (%) | ||||||||
Dementia | 4.09 | 4.49 | 4.53 | 4.34 | 4.47 | 4.34 | 4.38 | 4.38 |
Parkinson’s disease | 4.16 | 4.19 | 4.25 | 4.00 | 4.30 | 4.18 | 4.14 | 4.13 |
Depression | 12.4 | 13.4 | 13.4 | 14.2 | 14.6 | 13.2 | 12.7 | 12.5 |