Table 2.
Change in daily sitting time and total sedentary time between baseline and Year 3 of the OS, stratified by age.
| Characteristic | All (N, mean (SD)) | Age Categories (years) | ||
|---|---|---|---|---|
| 50–59 (N, mean (SD)) | 60–69 (N, mean (SD)) | 70–79 (N, mean (SD)) | ||
| Sitting time (hours/day) | ||||
| Baseline | 61609, 7.47 (3.12) | 21363, 8.07 (3.35) | 27953, 7.23 (3.00) | 12293, 6.97 (2.79) |
| Year 3 | 58111, 7.04 (2.93) | 19888, 7.57 (3.20) | 26541, 6.78 (2.77) | 11682, 6.71 (2.67) |
| Change | 58111, −0.43 (2.88) | 19888, −0.50 (3.00) | 26541, −0.45 (2.84) | 11682, −0.27 (2.75) |
| P value for change4 | <.0001 | <.0001 | <.0001 | <.0001 |
|
| ||||
| Total sedentary time (hours/day) | ||||
| Baseline | 61407, 8.63 (3.82) | 21303, 9.14 (3.94) | 27860, 8.42 (3.74) | 12244, 8.21 (3.67) |
| Year 3 | 57565, 8.09 (3.44) | 19697, 8.52 (3.62) | 26308, 7.85 (3.33) | 11560, 7.88 (3.30) |
| Change | 57390, −0.54 (3.62) | 19649, −0.61 (3.63) | 26225, −0.58 (3.60) | 11516, −0.33 (3.64) |
| P value for change4 | <.0001 | <.0001 | <.0001 | <.0001 |
4 P value was based on a 1-df t-test for the hypothesis of no significant change between baseline and year.