Quartile 1 (0.4–15) | Quartile 2 (16–32) | Quartile 3 (33–55) | Quartile 4 (56–187) | Total* | |||||
Number of participants (n deaths) | 297 (86) | 296 (53) | 292 (32) | 296 (23) | 1181 (194) | ||||
Person-years | 1321 | 1422 | 1432 | 1471 | 5646 | ||||
Mortality/1000 person-years | 65.1 | 37.2 | 22.3 | 15.6 | 34.4 | ||||
HR | 95% CI | HR | 95% CI | HR | 95% CI | HR | 95% CI | ||
Model 1† | Reference | 0.75 | 0.53 to 1.06 | 0.54 | 0.35 to 0.82 | 0.45 | 0.27 to 0.73 | 0.90 | 0.84 to 0.96 |
Model 2‡ | Reference | 0.76 | 0.53 to 1.08 | 0.54 | 0.35 to 0.84 | 0.45 | 0.27 to 0.75 | 0.90 | 0.84 to 0.96 |
Model 3§ | Reference | 0.88 | 0.60 to 1.28 | 0.63 | 0.40 to 0.99 | 0.52 | 0.31 to 0.87 | 0.92 | 0.86 to 0.98 |
Model 4¶ | Reference | 1.05 | 0.71 to 1.57 | 0.89 | 0.53 to 1.47 | 0.90 | 0.48 to 1.70 | 1.00 | 0.92 to 1.09 |
Model 5** | Reference | 0.95 | 0.89 to 1.02 |
*HR for mortality per 10 min of MVPA per day (continuous variable).
†Model 1=age+ region of residence+season of wear+accelerometer wear time.
‡Model 2=model 1+social class+alcohol use+smoking+sleep time+living alone+body mass index.
§Model 3=model 2+mobility disability.
¶Model 4=model 3+sedentary behaviour.
**Model 5=model 3+sedentary behaviour+LIPA (but without adjustment for accelerometer wear time).
CHD, coronary heart disease; LIPA, light physical activity; MVPA, moderate to vigorous physical activity.