Table 8.

Comparative Reliability of the NPQ and the NPQ-SF

NPQ	Patient-Patient N = 75	Patient-Observer N = 82	Two observers N =28
average	0.71	0.56	0.61
min	0.54	0.39	0.42
max	0.80	0.74	0.81
NPQ-SF
average	0.69	0.55	0.54
min	0.53	0.39	0.33
max	0.82	0.74	0.76