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Table 2 Responsiveness statistics

From: German version of the whiplash disability questionnaire: reproducibility and responsiveness

Outcome WDQ-G SF-36BP NASS-PF VAS
Precision-referenced (non-dichotomised from ME1 to ME3)     
SRM 1.19 1.00 0.75* 0.91*
Precision-referenced (stable ME1 to ME2)     
ICC (95% CI lower-upper) 0.91 (0.80–0.95) 0.76 (0.61–0.85) 0.94 (0.89–0.97) 0.79 (0.61–0.89)
SEM 6.14 5.58 0.19 0.82
MDC 17 16 0.53 2.26
Criterion-referenced (improved from ME1 to ME3 vs. stable from ME1 to ME2)     
ROC cut-off (MIC) 11 (17)§ 16 (16)§ 0.15 (0.6)§ 1.850 (2.3)§
ROC AUC 0.85 (0.76–0.93) 0.880 (0.81–0.95) 0.78 (0.69–0.88) 0.87 (0.79–0.94)
  1. *significant difference compared to WDQ-G SRM on the level of 0.01; ME Measurement Event; SD Standard Deviation; WDQ-G Whiplash Disability Questionnaire; SF-36BP 36 Item Short Form Health Survey Bodily Pain Subscale; NASS-PF North American Spine Society Questionnaire Pain and Function Subscale; SRM Standardised Response Mean; ICC Intraclass Correlation Coefficient; SEM Standard Error of Measurement; MDC Minimal Detectable Change; ROC Receiver Operating Characteristics; § MIC Minimal Important Change (equals numbers in brackets); AUC Area under Curve of ROC.