. Author manuscript; available in PMC: 2015 Feb 1.

Published in final edited form as: Am J Kidney Dis. 2013 Oct 4;63(2):206–213. doi: 10.1053/j.ajkd.2013.08.010

Table 2. Cumulative incidence of reduced kidney function by eGFR in RA versus non-RA cohorts.

eGFR Category	No. of Events After Incidence/Index		Cumulative incidence (95% CI)		p-value
	RA	Non-RA	RA	Non-RA
<60 mL/min/1.73 m²	111	88	10 y: 15.0 (11.9-18.1) 20 y: 25.1 (20.2-30.0)	10 y: 9.9 (7.5-12.3) 20 y: 20.2 (15.7-24.7)	0.03
<45 mL/min/1.73 m²	46	51	10 y: 4.2 (2.4-6.0) 20 y: 9.3 (6.2-12.4)	10 y: 5.6 (4.0-7.2) 20 y: 10.4 (7.3-13.5)	0.8

eGFR, estimated glomerular filtration rate; RA, rheumatoid arthritis; CI, confidence interval