Table 4.

Sensitivity analysis of incident dementia by decade using age as the time scale

	Total (Dementia Events)		Hazard Ratio (95% Confidence Interval) *
Decade	RA	Non-RA	RA (N=897)	Non-RA (N=885)	RA vs. Non-RA
1980–1989	198 (34)	196 (36)	Ref	Ref	1.59 (0.98,2.57)
1990–1999	298 (44)	291 (34)	1.00 (0.64,1.57)	0.89 (0.56,1.43)	1.69 (1.08,2.65)
2000–2009	401 (26)	398 (30)	0.75 (0.45,1.26)	1.31 (0.80,2.14)	0.90 (0.53,1.52)

CI = confidence interval, RA = rheumatoid arthritis, ref = reference

^*Adjusting for sex