Table 2

Reliability Coefficients and Minimal Level of Detectable Change

Measure

R (95% CI)

SEM (95% CI)

Confidence in Score (90% CI)

MDC90


Fast Self-paced Walk Time (completed over 40 meters)

0.91 (0.81, 0.97)

1.73 (1.39, 2.29)

± 2.86 s

4.04 s

Stair Time

0.90 (0.79, 0.96)

2.35 (1.89, 3.10)

± 3.88 s

5.49 s

Timed Up and Go Time

0.75 (0.51, 0.89)

1.07 (0.86, 1.41)

± 1.76s

2.49 s

Six Minute Walk Test Distance

0.94 (0.88, 0.98)

26.29 (21.14, 34.77)

± 43.37 m

61.34 m


R, Reliability Coefficient

SEM, Standard Error of Measurement

MDC90, Minimal detectable change at the 90% confidence Level

s, seconds

m, meters

Kennedy et al. BMC Musculoskeletal Disorders 2005 6:3   doi:10.1186/1471-2474-6-3

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