The Persian Brief Illness Perception Questionnaire: Validation in Patients with Chronic Nonspecific Low Back Pain

Table 1

Descriptive statistics of the Brief Illness Perception Questionnaire (BIPQ) and other scales.

	Mean	SD	Minimum	Maximum
VAS	4.2	1.7	0.0	10.0
PCS	13.7	8.0	0.0	36.0
RMDQ	7.1	4.4	0.0	20.0
PASS-20	35.6	18.4	0.0	90.0
SF-36-PH	59.5	19.0	14.3	96.0
SF-36-MH	58.8	20.3	5.4	100.0
SF-36	59.1	17.9	13.4	98.0
BIPQ	44.2	10.3	19.0	68.0

VAS: visual analog scale; PCS: pain catastrophizing scale; RMDQ: Roland Morris disability questionnaire; PASS-20: pain anxiety symptom scale-20; SF-36: short form-36; SF-36-PH: short form-36-physical health; SF-36-MH: short form-36-mental health.