Development, reliability and validity of the Safe Use of Mobility Aids Checklist (SUMAC) for 4-wheeled walker use in people living with dementia

Table 3 Scores and reliability values for the two components of the SUMAC

	Component scores of the Safe Use of Mobility Aids Checklist
	Physical Function	Interaction with Equipment
Mean (SD), range
Assessment #1	31.25 (3.81), 23–39	44.75 (5.40), 28–55
Assessment #2	29.80 (4.10), 18–37	43.46 (5.75), 28–53
Relative Reliability (Intraclass correlation coefficients (95%CI), p-value)
Assessment #1: Inter-rater reliability	0.72 (0.31, 0.92), p = 0.003	0.84 (0.61, 0.96), p < 0.001
Assessment #2: Inter-rater reliability	0.92 (0.81, 0.98), p < 0.001	0.82 (0.54, 0.95), p < 0.001
Test-retest reliability	0.89 (0.81, 0.94), p < 0.001	0.88 (0.79, 0.93), p < 0.001
Absolute Reliability
Standard Error of Measurement (SEM)	1.31	1.93
Minimum Detectable Change (MDC₉₅)	3.64	5.35

ISSN: 1471-2318