Table 2.

Accuracy of models

	Random forest	Support vector machine	K-nearest neighbour
Lab calibration 7 activities	83.3%	82.3%	82.5%
Lab calibration 5 activities	96.3%	95.0%	95.7%
Free-living validation 7 activities	43.0%	35.7%	29.6%
Free-living validation 5 activities	71.2%	67.1%	63.4%