Table 1.

Descriptive statistic of the study variables (N = 360)

	Pain catastrophizing	Physical function	Pain intensity		Oxford Knee Score	Anxiety	Depressive	Optimism	Pessimism
			At rest	During activity
Mean	24.92	37.18	3.66	7.26	27.56	7.50	6.66	8.27	6.45
SD	12.38	20.33	2.14	1.82	8.19	4.37	4.54	2.05	2.17
Range	0–52	0–95	0–10	1–10	3–48	0–21	0–21	0–12	0–12