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

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

  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
  1. SD Standard deviation, CI Confidence interval