Table 1. Selected appearance modes. Odds ratio (95% confidence interval), P values

	Arthroplasty (21) vs		Arthroplasty (21) vs		New Incident OA (47) vs		OA progression (126) vs
	No progression (419)		No arthroplasty (495)		Never OA (378)		No progression (419)
	Non-adjusted	KL adjusted	Non-adjusted	KL adjusted	Non-adjusted	KL adjusted	Non-adjusted	KL adjusted
App7	1.72* (1.10-2.70),	NS	1.57* (1.01-2.46),	NS	1.5* (1.01-2.06),	1.78* (1.19-2.36),	1.65* (1.33-2.05),	1.46* (1.15-1.86),
	P=0.018		P=0.047		P=0.013	P=0.003*	P<0.001	P=0.002
App13	0.29* (0.17-0.49),	NS	0.33* (0.20-0.54),	0.57* (0.34-0.95),	0.67* (0.48-0.94),	0.7* (0.50-0.98),	0.59* (0.48-0.73),	0.78* (0.61-0.98),
	P<0.001		P<0.001	P=0.031	P=0.02	P=0.036	P<0.001	P=0.032
App16	2.65* (1.71-4.11),	2.36* (1.38-4.03),	2.56* (1.65-3.97),	2.14* (1.29-3.57),	NS	NS	1.48* (1.21-1.82),	1.29* (1.03-1.61),
	P<0.001	P=0.002	P<0.001	P=0.003			P<0.001	P=0.026