Table 1.

Baseline characteristics of postmenopausal women included in the knee OA study with the localization of OA, if present at other sites than the knee

		Quantitative real-time PCR
		Prevalent OA			Incident OA
		Control	Knee OA	p value	Control	Knee OA	p value
Number of subjects		42	43		25	23
Age (years, mean ± SD)		68.3 ± 6.6	68.3 ± 6.6	0.77	67.7 ± 7.2	68.4 ± 8.0	0.72
BMI (kg/m2)		25.9 ± 4.4	26.6 ± 4.4	0.38	26.2 ± 5.2	25.2 ± 4.0	0.73
Knee OA	KL score at baseline	0	2/3		0	0/1
	KL score at the end of the follow-up	0/1	2/3/4		0	2/3
OA at other sites	Hip (Lane score)	2	5	0.25	5	5	0.88
	Hand (ACR criteria)	23	25	0.75	11	7	0.33
	Spine (self-reported)	34	37	0.67	20	21	0.19