Table I.

Baseline characteristics of patients undergoing TRA versus TFA by experienced radial and femoral operators, respectively, in the diagnostic coronary angiography cohort

Total cohort	Radial (n = 240)	Femoral (n = 870)	P
Age (y)	66.0 + 11.8	64.5 + 12.6	.10
Men (%)	60.8	59.7	.77
Body mass index (kg/m2)	28.8 + 6.8	29.5 + 6.2	.16
Left-sided access (%)	14.2	2.3	<.001
Assessment of grafts (%)	10.0	8.5	.52
Assessment of AV or LV function (%)	51.3	56.6	.16
Use of IVUS (%)	1.3	2.1	.59
Use of pressure wire (%)	0.8	2.6	.14
No. of exposures	8.0 + 4.4	8.5 + 3.4	.007
Total Contrast use (mL)	75 [55–101]	80 [64–104]	.009
Junior fellow present (%)	34.6	22.5	<.001
After exclusion of cases where a junior fellow is present:	Radial (n = 157)	Femoral (n = 674)
Age (y)	65.3 + 11.5	64.8 + 12.5	.68
Men (%)	61.8	59.1	.59
Body mass index (kg/m2)	28.7 + 6.3	29.4 + 6.1	.22
Left-sided access (%)	14.6	2.4	<.001
Assessment of grafts (%)	10.8	9.9	.77
Assessment of AV or LV function (%)	49.7	57.4	.09
Use of IVUS (%)	1.9	2.4	1.00
Use of pressure wire (%)	0.6	3.1	.10
No. of exposures	8.3 + 4.5	8.6 + 3.6	.04
Contrast use (mL)	75 [55–107]	80 [65–104]	.53
After additional exclusion of cases with left-sided access or assessment of coronary artery bypass grafts:	Radial (n = 132)	Femoral (n = 595)
Age (years)	64.8 + 11.6	63.8 + 12.5	.43
Men (%)	59.1	56.6	.63
Body mass index (kg/m2)	28.6 + 6.5	29.5 + 6.2	.12
Assessment of AV or LV function (%)	56.1	59.2	.56
Use of IVUS (%)	0.8	2.5	.33
Use of pressure wire (%)	0.8	3.2	.15
No. of exposures	7.6 + 4.0	8.1 + 2.5	.007
Contrast use (mL)	70 [51–94]	80 [65–100]	.001

AV, Aortic valve; LV, left ventricular.

Data shown as mean ± SD or median [interquartile range].