Table 3.

Multivariable predictors of CRT-D implantation compared to CRT-P.

	CRT Procedures, N (% CRT-D)	CRT-D Predictors, RR (95% CI)
Calendar Year
2006	55,496 (89.0)	ref
2007	48,453 (88.2)	1.00 (0.98 - 1.02)
2008	46,282 (87.4)	1.00 (0.97 - 1.02)
2009	49,011 (86.7)	0.99 (0.96 - 1.01)
2010	40,688 (85.0)	0.97 (0.94 – 0.99)
2011	37,270 (82.1)	0.94 (0.91 – 0.97)
2012	33885 (81.5)	0.94 (0.91 - 0.96)
Age
18-54	32,982 (92.5)	ref
55-64	55,376 (92.1)	0.99 (0.98 - 1.00)
65-74	95,768 (89.6)	0.96 (0.95 - 0.98)
75-84	102,074 (83.5)	0.90 (0.88 - 0.92)
≥85	24,886 (62.0)	0.66 (0.62 - 0.70)
Male	218,883 (88.6)	1.10 (1.09 – 1.10)
Race
White	196,786 (85.6)	ref
Black	27,584 (91.0)	1.06 (1.04 - 1.07)
Other*	27,605 (87.8)	1.01 (0.99 - 1.03)
Primary payer
Private	60,020 (89.9)	Ref
Medicare	225,462 (84.5)	1.01 (1.00 -1.02)
Medicaid	14,861 (92.0)	1.02 (1.00 - 1.03)
Other†	10,338 (90.0)	0.99 (0.97 - 1.01)
Elective admission	157,336 (87.5)	1.04 (1.03 - 1.05)
Region
Midwest	81,012 (84.1)	ref
Northeast	60,734 (89.4)	1.06 (1.04 – 1.09)
South	117,162 (86.0)	1.01 (0.98 - 1.04)
West	52,178 (85.8)	1.01 (0.98 - 1.03)
Hospital location/teaching
Urban, teaching	185,080 (86.3)	ref
Urban, non-teaching	111,423 (86.8)	1.01 (0.99 - 1.03)
Rural	12,334 (77.4)	0.91 (0.77 - 1.00)
Ischemic heart disease	204,259 (88.8)	1.11 (1.10 - 1.11)
Ventricular arrhythmia	77,932 (94.9)	1.14 (1.13 – 1.14)
Left bundle branch block	103,639 (90.7)	1.08 (1.07 - 1.09)
Complete AV block	28,083 (69.4)	0.83 (0.81 - 0.85)
Atrial fibrillation	116,505 (78.9)	0.91 (0.90 - 0.92)
Elixhauser comorbidities
0	49,952 (87.1)	ref
1-2	154,891 (86.8)	1.00 (0.92 - 1.08)
3-4	81,745 (85.0)	0.98 (0.97 - 0.99)
≥5	24,497 (83.6)	0.98 (0.96 - 0.99)

^*Includes Hispanic, Asian or Pacific Islander, Native American, and other.

^†Includes self-pay, no charge, and other.