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Table 2 Sedentary behavior among all study participants and in subgroups

From: Device-measured sedentary behavior and physical activity in older adults differ by demographic and health-related factors

 Sedentary time (min/day)Sit-to-stand transitions (n)Usual sedentary bout (min)Longest sedentary bout (min)
Total samplea512.1 (455.6–571.7)5.1 (4.0–6.4)30.1 (24.4–39.1)132.6 (106.4–167.2)
Sex
 Women502.6 (492.2–513.1)*5.3 (5.1–5.5)*30.5 (28.8–32.1)135.0 (128.1–141.9)
 Men535.6 (521.6–549.9)4.8 (4.5–5.1)31.3 (30.1–32.4)133.1 (128.0–138.2)
Age group
 66 years504.5 (493.3–515.8)*5.4 (5.2–5.6)*29.9 (28.6–31.2)*133.2 (127.7–138.7)
 81–87 years526.0 (511.9–540.1)4.8 (4.5–5.0)32.0 (30.3–33.6)134.3 (127.4–141.2)
  ≥ 90 years552.3 (510.6–593.9)4.5 (3.7–5.3)37.4 (32.6–42.3)137.4 (117.0–157.8)
Education
  ≤ High school516.5 (503.8–529.3)5.0 (4.8–5.3)31.4 (30.0–32.9)133.7 (127.4–139.9)
 University513.0 (502.1–524.0)5.2 (5.0–5.4)30.7 (29.4–32.0)133.9 (128.5–139.2)
Marital status
 Living alone526.2 (513.3–539.0)*5.0 (4.8–5.3)31.4 (29.8–32.9)134.7 (128.4–141.0)
 Married/partner505.4 (494.1–516.7)5.2 (4.9–5.4)30.7 (29.4–32.0)133.1 (127.6–138.6)
Body mass index
 Underweight < 20512.0 (469.7–554.4)5.6 (4.8–6.4)*26.9 (22.0–31.9)*130.3 (109.6–151.0)
 Normal 20–24501.5 (489.0–513.9)5.4 (5.2–5.7)29.0 (27.6–30.5)130.0 (124.0–136.1)
 Overweight 25–29520.6 (507.4–534.0)5.0 (4.7–5.2)32.0 (30.5–33.6)134.8 (128.3–141.3)
 Obese ≥30539.6 (517.4–561.8)4.4 (4.0–4.8)35.5 (32.9–38.1)143.7 (132.9–154.6)
Physical function
 5 STS, not able to550.1 (521.9–578.2)*4.3 (3.8–4.9)35.3 (32.0–38.6)*144.4 (130.6–158.1)
 5 STS, able to510.6 (502.0–519.3)5.2 (5.0–5.4)30.5 (29.5–31.5)132.6 (128.4–136.9)
  1. Data are reported as average median (confidence intervals), adjusted for all other listed variables plus wear time, *p < 0.05 within subgroups. aUnadjusted median and interquartile range. 5 STS = 5 times sit to stand test
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