Table 5.

Spearman's rank correlation between the Brief Pain Inventory average pain intensity score with three severity levels according to variations in cutpoints (CPA) and corresponding scales of the SF-36 and WOMAC questionnaires for patients with OA of the hip or knee

	Patients with OA of the hip		Patients with OA of the knee
	WOMAC pain n = 221	SF-36 Bodily pain n = 224	WOMAC pain n = 93	SF-36 Bodily pain n = 94
CPA 3,5	0.53	-0.51	0.49	-0.42
CPA 3,6	0.60	-0.54	0.50	-0.43
CPA 3,7	0.53	-0.48	0.50	-0.38
CPA 4,5	0.53	-0.50	0.51	-0.44
CPA 4,6	0.61	-0.54	0.54	-0.47
CPA 4,7	0.56	-0.49	0.57	-0.46
CPA 5,6	0.57	-0.54	0.51	-0.45
CPA 5,7	0.56	-0.53	0.54	-0.44

For all correlations, p < 0.001

Optimal cut-offs are bold-faced