BMC Medical Research Methodology

Table 2 Wear time and physical activity levels (min ± SD) according to the algorithm used

From: Comparison and validation of accelerometer wear time and non-wear time algorithms for assessing physical activity levels in children and adolescents

	Wear time (min.day^− 1)	P*	Levels of PA (min.day^− 1)
	Wear time (min.day^− 1)	P*	Sedentary	P*	MVPA	P*
Log diary method	727.5 ± 154.2	–	515.2 ± 134.1	–	60.9 ± 42.9	–
Troiano et al. (2008)[11]	756.0 ± 140.4	0.006	541.0 ± 121.1	0.002	58.6 ± 38.3	0.38
Choi et al. (2012)[15]	767.0 ± 137.9	0.0001	551.0 ± 125.9	< 0.0001	58.8 ± 38.3	0.42
60 min	764.4 ± 135.0	0.0003	548.3 ± 122.7	< 0.0001	58.8 ± 38.3	0.42
30 min	736.4 ± 139.5	0.38	520.4 ± 118.1	0.54	58.8 ± 38.3	0.42
20 min	712.2 ± 144.1	0.14	496.2 ± 114.2	0.026	58.8 ± 38.3	0.42
15 min	689.1 ± 148.7	0.0003	473.1 ± 111.7	< 0.0001	58.8 ± 38.3	0.42
10 min	640.4 ± 154.6	< 0.0001	424.2 ± 108.1	< 0.0001	58.8 ± 38.3	0.42

*P-value calculated using a linear mixed model using the gold standard method (log diary method) as reference

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