Table 4 Psychometric properties of the Past-day Adults’ Sedentary Time (PAST) questionnaire for measuring sedentary behaviour in a sample of Chilean working adults with the AP as reference standard
Total (n = 77) | Men (n = 41) | Women (n = 36) | ||||
|---|---|---|---|---|---|---|
Estimate (CI 95%) | p | Estimate (CI 95%) | p | Estimate (CI 95%) | p | |
PAST test-retest reliability | ||||||
Total SB (ICC, CI 95%) | 0.63 (0.35–0.92) | < 0.011 | 0.80 (0.57–1.04) | 0.017 | 0.90 (0.74–1.05) | 0.017 |
SB at work (ICC, CI 95%) | 0.40 (0.13–0.68) | < 0.001 | 0.32 (0.00–0.73) | 0.075 | 0.28 (0.00–0.72) | 0.104 |
Sedentary behaviour | ||||||
Total SB (mean, min/day) | ||||||
PAST | 645.8 (591.7–699.9) | 0.106 | 653.9 (571.6–736.2) | 0.521 | 636.6 (564.4–708.8) | 0.079 |
AP | 590.9 (548.0–633.8) | 625.6 (563.6–687.7) | 551.3 (492.2–610.4) | |||
SB at work (mean, min/day) | ||||||
PAST | 318.4 (274.9–361.9) | 0.129 | 349.7 (280.9–418.6) | 0.395 | 279.0 (231.9–326.2) | 0.147 |
AP | 285.3 (245.7–324.8) | 316.6 (254.7–378.6) | 245.8 (202.1–289.5) | |||
SB percentage from work (% per day) | ||||||
PAST | 48.8 (43.5–54.0) | 0.428 | 52.8 (45.0–60.5) | 0.219 | 43.8 (37.0–50.6) | 0.891 |
AP | 46.8 (42.0–51.6) | 48.3 (41.9–54.8) | 44.9 (37.3–52.4) | |||
Concurrent validity | ||||||
Total SB (rho, CI 95%) | 0.21 (0.00–0.41) | 0.07 | 0.19 (−0.12–0.50) | 0.24 | 0.27 (−0.05–0.59) | 0.11 |
SB at work (rho, CI 95%) | 0.37 (0.14–0.60) | 0.002 | 0.35 (0.04–0.66) | 0.028 | 0.35 (−0.03–0.73) | 0.054 |
SB percentage from work (rho, CI 95%) | 0.32 (0.06–0.58) | 0.007 | 0.36 (0.01–0.70) | 0.025 | 0.25 (−0.08–0.58) | 0.179 |
Agreement (kappa) | ||||||
Total SB | ||||||
Tertiles | 0.08 | 0.149 | −0.03 | 0.590 | 0.20 | 0.048 |
Quartiles | 0.01 | 0.424 | 0.05 | 0.300 | 0.09 | 0.704 |
Quintiles | 0.06 | 0.434 | 0.02 | 0.375 | 0.08 | 0.533 |
SB at work | ||||||
Tertiles | 0.22 | 0.003 | 0.20 | 0.031 | 0.20 | 0.045 |
Quartiles | 0.19 | 0.002 | 0.21 | 0.012 | 0.13 | 0.099 |
Quintiles | 0.14 | 0.007 | 0.17 | 0.012 | 0.08 | 0.187 |
SB percentage from work | ||||||
Tertiles | 0.08 | 0.174 | 0.11 | 0.171 | 0.03 | 0.401 |
Quartiles | 0.05 | 0.244 | 0.04 | 0.333 | 0.05 | 0.318 |
Quintiles | 0.07 | 0.116 | 0.11 | 0.076 | 0.05 | 0.290 |