Table 1. Patient characteristics and outcomes.

	Total				K-L grade 2 group				K-L grade 3 group
	n	Median	95% CI	5th-95th percentile	n	Median	95% CI	5th-95th percentile	n	Median	95% CI	5th-95th percentile	p
Age (year)		70,0	(69.0-71.4)	55.3-83.0		69,5	(68.0-71.0)	55.0-80.6		72,0	(68.2-75.7)	59.7-88.1	0,0502
Gender													0,79
Male	32				17				15
Female	81				47				34
WOMAC-Overall score (t0)		51,4	(43.3-58.5)			51,3	(40.8-60.3)			51,4	(36.2-63.9)		0,94
WOMAC-Overall score (t1)		40,9	(36.8-50.7)			41,4	(34.2-54.7)			40,8	(34.0-51.1)		0,81
WOMAC-Stiffness (t0)		50,0	(44.9-62.0)			50,0	(37.0-62.2)			62,0	(37.0-70.0)		0,59
WOMAC-Stiffness (t1)		41,0	(37.0-50.0)			40,0	(36.4-50.0)			45,0	(37.0-52.5)		0,52
WOMAC-Pain (t0)		52,5	(45.0-60.0)			52,3	(44.1-65.0)			55,0	(35.0-70.0)		0,87
WOMAC-Pain (t1)		50,0	(42.3-50.0)			48,8	(41.4-50.0)			50,0	(35.0-50.0)		0,68
WOMAC-Physical Function (t0)		50,0	(42.2-57.3)			50,5	(39.4-58.2)			49,0	(38.0-61.7)		0,90
WOMAC-Physical Function (t1)		40,0	(35.0-50.0)			40,0	(32.7-53.9)			40,0	(32.2-50.0)		0,76
CI: Confidence interval; WOMAC: Western Ontario and McMaster Universities Osteoarthritis Index.