Table 1.

Number of patients on biologic treatment

Biologics	Age group		Allc
	≥65 yearsa	<65 yearsb
All biologics	55 (15.03)	134 (27.18)	189 (22.08)
ETA	17 (30.91)	46 (34.33)	63 (33.33)
ADA	13 (23.64)	32 (23.88)	45 (23.81)
CER	4 (7.27)	12 (8.96)	16 (8.47)
INF	2 (3.64)	1 (0.75)	3 (1.59)
GOL	0 (0.00)	2 (1.49)	2 (1.06)
TOC	1 (1.82)	7 (5.22)	8 (4.23)
ABA	0 (0.00)	0 (0.00)	0 (0.00)
RIT	18 (32.73)	34 (25.37)	52 (27.51)

All values given are n (%)

ABA abatacept, ADA adalimumab, CER certolizumab, ETA etanercept, GOL golimumab, INF infliximab, RIT rituximab, TOC tocilizumab

^a N = 366; average age = 75.1 years

^b N = 493; average age = 51.2 years

^c N = 859; average age = 61.4 years