Variable category	5 years^a	10 years^a	RR	95% CI	p-value

Gender, male	13	22	1
female	19	30	1.35	1.02–1.77	0.035
Age (years)
<69	15	27	1
≥70	22	31	1.04	0.77–1.42	0.78
Radiolographic changes at diagnosis
No arthritis	12	21	1
Possible arthritis, or MR findings only	19	26	1.01	0.66–1.57	0.92
Arthritis	23	34	1.46	1.10–1.94	0.008
Osteoarthritis	35	55	2.81	1.94–4.05	<0.001
Time period
1999–2009	12	18	1
1986–1998	25	38	2.16	1.62–2.87	<0.001
1972–1985	15	37	2.38	1.71–3.31	<0.001

^a5- and 10-year survival, in percent.