Table 1

Comparison of demographic features between examined and not examined RA patients from the Oslo RA register (mean(SD) or %)

	Examined (n=636)	Not examined (n=258)	p value
Age (y)	53.6 (12.2)	54.7 (12.8)	0.25
Female	80.2	78.7	0.61
Disease duration (y)	12.2 (9.3)	13.0 (9.3)	0.25
RF positive^1-150	51.5	47.3	0.27

↵1-150 Waaler-Rose IgM titre ⩾64.