Dynamic weight-bearing assessment of pain in knee osteoarthritis: construct validity, responsiveness, and interpretability in a research setting

Table 4 Sensitivity and specificity for DAP change scores, using perceived change in pain as gold standard

DAP change^a	Sensitivity	Specificity	1 - Specificity	1-Sensitivity	Sum [1-Sens + 1-Spec]
−9.00	0.000	1.000	0.000	1.000	1.000
−6.50	0.027	1.000	0.000	0.973	0.973
−4.50	0.081	1.000	0.000	0.919	0.919
−3.50	0.216	1.000	0.000	0.784	0.784
−2.50	0.351	1.000	0.000	0.649	0.649
−1.50	0.568	1.000	0.000	0.432	0.432
-.50	0.703	0.500	0.500	0.297	0.797
.50	0.892	0.250	0.750	0.108	0.858
1.50	0.946	0.250	0.750	0.054	0.804
3.00	1.000	0.000	1.000	0.000	1.000

total number of participants who perceived improvement (TRANS-Q score 1–7) = 37
total number of participants who perceived no change (TRANS-Q score 0) = 4
The sum of misclassification is used to determine the most appropriate cutoff score (marked with bold letters).
^anegative number indicates a decrease in pain

ISSN: 1477-7525