Table 2. Angiographic and procedural characteristics.

Vascular access	TR (n = 59)	TF (n = 67)	P-value
Baseline QCA
Reference vessel diameter, mm	2.88 ± 0.40	2.91 ± 0.45	0.704
Lesion length, mm	21.8 ± 10.0	21.4 ± 10.1	0.787
Minimal luminal diameter, mm	0.56 ± 0.25	0.56 ± 0.17	0.861
Diameter stenosis, %	80.5 ± 5.78	80.8 ± 5.93	0.810
Post-procedural QCA
Reference vessel diameter, mm	2.91 ± 0.42	3.00 ± 0.42	0.261
Minimal luminal diameter, mm	2.68 ± 0.40	2.68 ± 0.47	0.961
Diameter stenosis, %	8.02 ± 5.25	10.2 ± 6.63	0.073
Guide catheter diameter (Fr)
6 Fr	35 (59%)	7 (10%)	< 0.001
7 Fr	18 (31%)	52 (78%)	< 0.001
8 Fr	6 (10%)	8 (12%)	0.975
Number of burr used	1.25 ± 0.57	1.39 ± 0.57	0.235
1 burr	47 (80%)	40 (60%)	0.026
2 burrs	8 (14%)	25 (37%)	0.005
3 burrs	4 (6%)	2 (3%)	0.562
Largest size of burr use
1.25 mm	30 (51%)	26 (39%)	0.240
1.5 mm	23 (39%)	13 (19%)	0.026
1.75 mm	6 (10%)	26 (39%)	< 0.001
2.0 mm	0 (0%)	2 (3%)	0.533
Mean of burr size, mm	1.39 ± 0.16	1.53 ± 0.24	0.001
Stent implantation	53 (90%)	60 (90%)	0.809
Bare metal stent	2 (4%)	5 (8%)	0.544
Drug-eluting stent	51 (96%)	55 (92%)	0.673
Stent diameter, mm	3.0 ± 0.5	3.1 ± 0.3	0.812
Stent length, mm	24 ± 19	26 ± 21	0.789
Procedural success rate	57 (97%)	66 (99%)	0.911

Data are expressed as mean ± SD or n (%). TF: transfemoral; TR: transradial; QCA: quantitative angiographic analysis.