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Table 4 Performance in trimmed model according to EQ-5D quartile in the derivation and validation sets

From: Mapping the neck disability index to SF-6D in patients with chronic neck pain

  Derivation set (n = 180) Validation set (n = 92)
  Observed values Predictive values Observed values Predictive values
Mean(SD) 0.53 (0.09) 0.52 (0.04) 0.5 (0.09) 0.52 (0.04)
 Min 0.21 0.29 0.19 0.33
 P25 0.45 0.46 0.46 0.49
Median 0.48 0.52 0.50 0.52
 P75 0.56 0.57 0.59 0.56
 Max 0.82 0.68 0.73 0.63
Adjusted R2 0.49 0.56
 MAE (SD) 0.04 (0.033) 0.04 (0.030)
RMSE (normalized for range) 0.06 (8.6 %) 0.05 (7.2 %)