Table 1.

Demographics of the analyzed subsamples of progressor cases and the non-progressor controls versus the entire progressor case and non-progressor control cohorts of the FNIH Osteoarthritis Biomarkers Consortium (All) and the healthy reference cohort of the Osteoarthritis Initiative.

	Cases		Controls		Healthy
	Subsample	All	Subsample	All	References
Participant number	110	194	118	200	88
Age#	60.8±8.3	62.0±8.8	61.4±9.1	61.5±9.1	54.5±7.5
BMI (kg/m2)#	31.2±4.9	30.7±4.8	30.4±4.6	30.5±4.8	24.3±3.0
Body Weight (kg)#	88.6±15.9	87.1±15.8	85.1±16.3	85.8±16.4	68.8±12.1
Body Height (cm)#	168.4±9.9	168.3±9.9	167.2±10.0	167.4±10.3	167.7±8.8
WOMAC knee pain#	2.7±3.3	2.0±2.6	2.4±3.3	2.6±3.2	0.1±0.3
KLG 0 n (%)	0 (0)	0 (0)	0 (0)	0 (0)	100
KLG 1 n (%)	11 (10)	24 (12)	15 (13)	24 (12)	0 (0)
KLG 2 n (%)	50 (45)	84 (43)	62 (52)	114 (57)	0 (0)
KLG 3 n (%)	49 (45)	86 (45)	41 (35)	62 (31)	0 (0)

BMI=Body mass index; kg = kilogram; m=meter; cm=centimeter; WOMAC knee pain score = Western Ontario & McMaster Universities Osteoarthritis Index on 0–20 unit scale; n = Participant number; (%) = Percentage of participants

^#mean ± standard deviation