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Table 4 Methodological characteristics of QuickDASH-9, QuickDASH, DASH and ULFI

From: A modified QuickDASH-9 provides a valid outcome instrument for upper limb function

  Reliability Internal consistency Error score Responsiveness Missing responses
Stage Rxx (ICC) Alpha SEM MDC90 SD100 ES SRM Percentage
Calibration (n = 46) (n = 139) (n = 29) (n = 29) (n = 29) (n = 29) (n = 29) (n = 137)
QuickDASH-9 0.94 0.89 4.82 11.22% 20.05% 1.19 1.65 11%
QuickDASH 0.94 0.92 4.98 11.58% 20.71% 1.21 1.75 12.5%
DASH 0.98 0.96 2.84% 6.63% 19.67% 1.41 2.18 34%%
ULFI 0.96 0.89 4.50% 10.50% 21.61% 1.28 1.87 <0.5%
Validation (n = 22) (n = 67) (n = 64) (n = 64) (n = 64) (n = 64) (n = 64) (n = 67)
QuickDASH-9 0.94 0.925 7.38% 17.18% 26.07% 1.05 1.21 3.5%
QuickDASH 0.91 0.92 6.73% 15.66% 23.20% 1.05 1.23 26.5%
ULFI 0.98 0.92 3.41% 7.93% 24.16% 0.93 1.25 <0.5%
  1. The QuickDASH psychometric properties are invalid. They are provided as a comparison to the other PROs and to the findings of previous QuickDASH studies.
  2. SD100: Standard deviation at baseline (100% scale); Rxx: Test-retest reliability coefficient; ICC: Intra-class Correlation Coefficient for test-retest reliability; SEM: Standard Error of the Measurement; MDC90: Minimal Detectable Change (90% CI); ES: Effect Size; SRM: Standard Response Mean; Alpha: Cronbach's Alpha.