Exercise therapy, education, and cognitive behavioral therapy alone, or in combination with total knee arthroplasty, in patients with knee osteoarthritis: a randomized feasibility study

Table 1 An overview of the screening instrument

	Instrument:	Cutoff^a:
Age		< 55
Preoperative pain and function	The Knee Injury and OA Outcome Score (KOOS) pain and physical scale combined^b	≤ 22
Widespread pain	Number of painful sites	≥ 2
Pain catastrophizing	Pain Catastrophizing Scale (PCS)^c	≥ 30
Pain-related fear avoidance	Fear-Avoidance Belief Questionnaire (FABQ)^d	> 14.9
Depression/anxiety	Hospital Anxiety and Depression Scale (HADS)^e	> 11

^aScores below/above the cutoff point gave one point on each topic. Patients with two points or more were rated as at risk of poor outcomes and could be included in the study
^bHigher score=more pain
^cHigher score=more catastrophizing
^dHigher score=more fear avoidance beliefs
^eHigher score=more anxiety and depression

ISSN: 2055-5784