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Table 2 Errors for non-wear time (min) in hip-worn ActiGraph calculated by Choi-Algorithm based on non-wear time from diaries. Participants (n = 68)

From: Validation of automatic wear-time detection algorithms in a free-living setting of wrist-worn and hip-worn ActiGraph GT3X+

 

Error of non-wear time in min (Mean ± SD)

Day 1

Day 2

Type I Error

Mean ± SD

36.8 ± 69.5

43.8 ± 76.8

Max

348

441

Type II Error

Mean ± SD

24.9 ± 26.8

30.9 ± 33.3

Max

142

195

Total Error

Mean ± SD

11.9 ± 70.2

12.9 ± 76.1

Min, Max

−142, 258

−195, 351