Table 2.

Changes in physical activity and the Short Physical Performance Battery scores for the tablet owners, tablet nonowners, and all participants combined.

Parameters		Baseline (N=20), mean (SD)	Week 8 (n=19), mean (SD)	Mean change (95% CI)	Effect size (Cohen d)
Walking time (min/week)
	Tablet owners	154 (84)	225 (155)	67 (–32 to 166)	1.20
	Tablet nonowners	155 (154)	244 (251)	89 (–50 to 227)	0.58
	All	155 (121)	235 (206)	78 (0 to 156)a	0.66
Moderate-to-vigorous physical activity (min/week)
	Tablet owners	50 (88)	97 (164)	42 (–37 to 121)	0.54
	Tablet nonowners	151 (152)	191 (217)	40 (–36 to 116)	0.26
	All	100 (132)	147 (195)	41 (–8 to 90)	0.36
Short Physical Performance Battery score
	Tablet owners	11.3 (0.7)	11.7 (0.7)	0.3 (–0.3 to 1.0)	0.59
	Tablet nonowners	11.7 (0.7)	11.9 (0.3)	0.2 (–0.4 to 0.8)	0.30
	All	11.5 (0.7)	11.8 (0.5)	0.3 (–0.1 to 0.7)	0.42

^aP=.049 within group change after 8 weeks.