Table 5.
Estimated physical activity, sedentary time, and sleep from DIGIKOST-FFQa and SWAb for all participants (n=56).
| Physical activity intensity | DIGIKOST-FFQ, median (P10-P90) | SWA, median (P10-P90) | Difference, median (P10-P90) | Pvaluec | Spearman ρ (95% CI) | Correct quartile | Correct+adjacent quartile (%) | Misclassification 2 quartiles (%) |
Grossly misclassification (%) |
| MPAd (min/week) | 123 (33-428) | 753 (247-1492) | –468 (–1333 to –156) | <.001 | 0.29 (0.02 to 0.50) | 30 | 73 | 21 | 5 |
| VPAe (min/week) | 62 (0-226) | 21 (0-178) | 18 (–42 to 123) | <.001 | 0.64 (0.45 to 0.78) | 43 | 82 | 18 | 0 |
| MVPAf (min/week) | 236 (48-507) | 754 (258-1534) | –453 (–1424 to 123) | <.001 | 0.40 (0.14 to 0.60) | 34 | 79 | 16 | 5 |
| Sedentary time (not sleep; h/day) | 10 (5-14) | 11 (8-13) | –0.63 (–6 to 3) | .06 | 0.27 (–0.001 to 0.5) | 41 | 75 | 16 | 9 |
| Sleep (h/day) | 7 (7-8) | 7 (6-8) | 0.21 (–1.3 to 1.7) | .03 | 0.19 (0.08 to 0.43) | 36 | 71 | 20 | 9 |
aFFQ: food frequency questionnaire.
bSWA: SenseWear Armband Mini.
cWilcoxon signed rank test.
dMPA: moderate physical activity.
eVPA: vigorous physical activity.
fMVPA: moderate to vigorous physical activity.