Table 2.

JSW at baseline and follow up in progressor and non-progressor groups according to KL score at baseline

K-L score	Progressors		Non-progressor
	JSW bas	JSW fu	JSW bas	JSW fu
0	N/A	N/A	3.0 (0.7)	3.0 (0.6)
1	2.67 (0.9)	2.31 (1.2)	2.8 (0.5)	2.8 (0.6)
2	1.62 (0.83)	1.15 (0.64)	1.89 (0.75)	1.93 (0.73)
3	0.75 (0.7)	0.57 (0.7)	0.8 (0.9)	0.8 (1.1)

Values represent JSW in mm (mean and SD) at baseline and two years follow up.

JSW = joint space width; KL score = Kellgren and Lawrence score