Table 6.

List of statistical analyses and performance metrics that will be used for the various digital mobility outcomes (DMOs)

DMO	Performance metric					Criterion validity							Plots
	Sensitivity	Positive predictive value	Accuracy	Specificity	F1-score	Error (absolute and relative)	SD & max of error	Root mean squared error	Precision	Concurrent validity (ICC)	Significant difference	Limit of agreement	Bland altman plots	Scatter plots for correlation	Histogram plots
Number of walking bouts	✓	✓	✓	✓	✓
WB start						✓	✓	✓	✓				✓	✓	✓
WB end						✓	✓	✓	✓				✓	✓	✓
WB duration						✓	✓	✓	✓	✓	✓	✓	✓	✓	✓
Initial contact events	✓	✓			✓	✓
Step duration						✓	✓	✓	✓	✓	✓	✓	✓	✓	✓
Stride duration						✓	✓	✓	✓	✓	✓	✓	✓	✓	✓
Final contact events	✓	✓			✓	✓
Mean stride length						✓	✓	✓	✓	✓	✓	✓	✓	✓	✓
Cadence						✓	✓	✓	✓	✓	✓	✓	✓	✓	✓
Elevation change						✓	✓	✓	✓	✓	✓	✓	✓	✓	✓
Walking speed						✓	✓	✓	✓	✓	✓	✓	✓	✓	✓
Number of turns	✓	✓	✓	✓	✓
Turn start						✓	✓	✓	✓				✓	✓	✓
Turn end						✓	✓	✓	✓				✓	✓	✓
Turn duration						✓	✓	✓	✓	✓	✓	✓	✓	✓	✓
Maximal Turn angle						✓	✓	✓	✓	✓	✓	✓	✓	✓	✓
Laterality						✓	✓	✓	✓	✓
Sequence order						✓	✓	✓

Performance metrics and criterion validity are those that will be used to compare DMOs obtained from a single device versus those obtained from the reference system. The types of plots listed in the table will be used to visualise performance metrics and to support interpretation of the results.

ICC, intraclass correlation coefficients; WB, walking bouts.