Table 1 Baseline characteristics of the participants by quartile of total sedentary time (n = 1,687)a
| Â | Quartile 1 (low) | Quartile 2 | Quartile 3 | Quartile 4 (high) | P for trend |
|---|---|---|---|---|---|
(n = 421) | (n = 422) | (n = 422) | (n = 422) | ||
Men, % | 18.3 | 29.6 | 39.6 | 63.7 |  < .0001 |
Age, years | 71.4 ± 5.2 | 72.9 ± 5.7 | 73.6 ± 6 | 75.4 ± 6.6 |  < .0001 |
Education, years | 11.1 ± 2.2 | 11.1 ± 2.4 | 10.9 ± 2.4 | 11.4 ± 2.8 | 0.44 |
Living alone, % | 10.7 | 14.9 | 13.0 | 14.0 | 0.28 |
BMI, kg/m2 | 22.5 ± 3 | 22.9 ± 3 | 23.5 ± 3.2 | 23.6 ± 3.2 |  < .0001 |
Multimorbidity, % | 39.7 | 45.5 | 44.3 | 58.3 |  < .0001 |
Fall experience in the past year, % | 20.9 | 18.3 | 16.6 | 21.6 | 0.97 |
Low walking ability, % | 10.0 | 13.5 | 10.2 | 16.6 | 0.02 |
Cognitive impairment, % | 5.0 | 3.8 | 5.9 | 6.6 | 0.15 |
Current smoker, % | 5.0 | 5.2 | 8.5 | 10.4 | 0.0005 |
Current drinker, % | 35.4 | 37.0 | 38.2 | 44.6 | 0.007 |
Accelerometer wear time, min/day | 849.4 ± 96.4 | 829.9 ± 96.1 | 837.8 ± 108.7 | 839.5 ± 117.8 | 0.01 |
Total sedentary time, min/day | 400.8 ± 48 | 500 ± 23 | 574.6 ± 20.3 | 673.4 ± 51.2 |  < .0001 |
Mean sedentary bout length, min/day | 5.6 ± 1.2 | 6.9 ± 1.4 | 8.5 ± 1.8 | 11.6 ± 3.9 |  < .0001 |
LPA, min/day | 444.6 ± 58.7 | 363.3 ± 45.8 | 302.3 ± 46.8 | 218.2 ± 56.8 |  < .0001 |
MVPA, min/day | 72.6 ± 40.6 | 47.3 ± 27.2 | 36.8 ± 25.3 | 22.7 ± 19.3 |  < .0001 |