Table 4. Mortality rates and hazard ratios and 95% confidence intervals of mortality according to quartiles of sedentary time selecting participants with 4 or more valid days of accelerometry data (n = 1711).
| N | Mortality rateb | HR c | 95%CI | |
| Hours of sedentary time per daya | ||||
| 1 (lowest) | 427 | 7 | 1.00 (REF) | |
| 2 | 428 | 14 | 1.16 | 0.48–2.83 |
| 3 | 428 | 32 | 2.94 | 1.42–6.08 |
| 4 (highest) | 428 | 50 | 3.22 | 1.39–7.44 |
| Percent sedentary timea | ||||
| 1 (lowest) | 427 | 4 | 1.00 (REF) | |
| 2 | 432 | 10 | 2.27 | 0.65–7.97 |
| 3 | 431 | 28 | 5.25 | 1.30–21.23 |
| 4 (highest) | 421 | 63 | 7.26 | 2.33–22.60 |
a
Quartile cut-off point sedentary time men: 7.6, 9.2, 10.8 hrs, women: 7.2, 8.7 10.1 hrs; percent sedentary time: men: 55.4, 64.7, 73.5%, women: 53.9, 61.9, 70.5%.
b
Mortality rate per 1000 person years.
c
Adjusted for gender, age, race/ethnicity, educational level, smoking status, alcohol intake, BMI, diabetes, coronary heart disease, congestive heart failure, cancer, stroke, mobility limitation and moderate to vigorous physical activity.