Internal Consistency (α) | Test-Retest Reliability (ICC) | SEM - SDC | Structural Validity (explained variance) | Costruct Validity (correlation) | |
---|---|---|---|---|---|
CNFDS (Jordan A et al.) | 0.90 | 0.99 (same day) - 0.90 (by mail 2 days later) | / - / | / | r = 0.83 with pain score r = 0.89 with patient global assessment r = 0.56 doctor global assessment |
CNFDS France (Forestier R et al.) | 0.83 | / | / - / | / | r = 0.45 with VAS |
CNFDS Poland (Misterska F et al.) | 0.90 | 0.93 (24 h) | / - / | / | r = 0.87 with NDI |
CNFDS Turkey (Yapali G et al.) | / | 0.86 (7 days) | / - / | / | r = 0.78 with NPDS r = 0.73 with VAS |
CNFDS Iran (Nayeb Aghaei H et al.) | 0.84 | 0.95 (n.d.) | / - / | / | r > 0.4 between each item and the three CNFDS subscales r = 0.80 with mJOA |
CNFDS Italy | 0.83 | 0.99 (3 days) | 3 points - 8.31 points | 6.36 | r = 0.85 with NDI-I r = 0.71 with NBQ-I r = 0.57 with VAS |