Table 4.

Multiple regression analysis with patient-reported outcomes as independent variable and various psychological evaluations as dependent variables

Variable	β
With RDQ as a dependent variable
SRQ-D	0.198*
BS-POP (patient version)	0.215*
With JOABPEQ pain-related disorder as a dependent variable
SRQ-D	-0.168*
BS-POP (patient version)	-0.323**
With JOABPEQ lumbar spine dysfunction as a dependent variable
HADS depression	-0.383**
With JOABPEQ gait disturbance as a dependent variable
PCS total	-0.234*
HADS depression	-0.223**
With JOABPEQ social life dysfunction as a dependent variable
HADS depression	-0.326**
With ZCQ physical function as a dependent variable
HADS anxiety	-0.24**
With ZCQ severity of symptoms as a dependent variable
PCS magnification	-0.167*

RDQ, Roland–Morris Disability Questionnaire; SRQ-D, Self-rating Questionnaire of Depression; BS-POP, Brief Scale for Psychiatric Problems in Orthopedic Patients; JOABPEQ, Japanese Orthopedic Association Back Pain Evaluation Questionnaire; HADS, Hospital Anxiety and Depression Scale; PCS, Pain Catastrophizing Scale; ZCQ, Zurich Claudication Questionnaire.

^*p<0.05.

^**p<0.01.