Validation of the six-minute walking distance measured by FeetMe® insoles

BMC Digital Health

Table 1 The total distances measured by the surveyor’s wheel (ground truth) and those estimated by FeetMe® and the rater

Method	n	Track length [m]	Ground truth		Estimation		Levene test p-value**
Method	n	Track length [m]	Mean (SD) [m]	Shapiro–Wilk p-value*	Mean (SD) [m]	Shapiro–Wilk p-value*	Levene test p-value**
FeetMe®	32	30	476.2 (61.1)	0.71	467.9 (60.1)	0.63	0.81
Rater	33	30	476.0 (60.1)	0.91	459.8 (55.7)	0.69	0.66
FeetMe®	32	10	441.2 (58.0)	0.061	432.2 (51.9)	0.101	0.43
Rater	33	10	442.1 (57.3)	0.29	404.3 (54.9)	0.107	0.65

Abbreviations: n number of participants, SD standard deviation
^*The Shapiro–Wilk test was used to assess the normality of the data obtained using the three methods
^**The Levene test p-values were obtained from comparisons between the SDs of the distances estimated by FeetMe® and the ground truth and between those of the rater and the ground truth

ISSN: 2731-684X