Table 3A.

Demographic comparisons among RA and non-RA patients in 2002–2003 and 2011–2012 for all TJA patients and those who had TSA.

Procedure	All TJA					TSA
Years	2002–2003		2011–2012		p	2002–2003		2011–2012		p
Cohort	Non-RA	RA	Non-RA	RA		Non-RA	RA	Non-RA	RA
Mean age, yrs, ± SD	66.70 ± 24.93	63.68 ± 27.06	65.64 ± 23.52	64.62 ± 24.09	< 0.0001^{^a}, < 0.0001^{^b}	68.19 ± 23.05	62.05 ± 28.48	67.58 ± 21.35	65.12 ± 23.32	0.0014^{^a}, 0.0024^{^b}
Age groups (%)
< 45 yrs	93.71	6.29	95.11	4.89	< 0.0001	78.77	21.23	89.19	10.81	< 0.0001
45–64 yrs	96.27	3.73	96.51	3.49	< 0.0001	93.63	6.37	95.34	4.66	< 0.0001
65–84 yrs	97.19	2.81	96.81	3.19	< 0.0001	95.90	4.10	96.40	3.60	0.0115
≥ 85 yrs	98.14	1.86	97.55	2.45	< 0.0001	98.84	1.16	96.82	3.18	0.0040
Sex (%)
Female	95.96	4.04	95.73	4.27	< 0.0001	93.26	6.74	94.58	5.42	< 0.0001
Male	98.11	1.89	98.05	1.95	0.0147	96.78	3.22	97.33	2.67	0.0061
Race (%)
White	96.99	3.01	96.90	3.10	0.0005	95.19	4.81	96.18	3.82	< 0.0001
Black	95.03	4.97	94.84	5.16	0.0872	92.78	7.22	92.63	7.37	0.8998
Insurance (%)
Private	96.96	3.04	97.15	2.85	< 0.0001	93.38	6.62	96.02	3.98	< 0.0001
Medicaid	94.20	5.80	95.44	4.56	< 0.0001	91.60	8.40	91.96	8.04	0.8188