Table 4.

Results of quantitative coronary angiography

	Conventional angioplasty (n=92)	Direct stenting (n=89)	p Value
Balloon size (mm)	3.32 (0.30)	3.39 (0.27)	0.26
Balloon:artery ratio	1.02 (0.09)	1.05 (0.09)	0.25
Maximal balloon pressure  (atm)	11.6 (3.4)	13.3 (1.6)	0.007
Number of stents	0.6 (0.5)	1.0 (0.0)	<0.001
Length of stents (mm)	17.8 (3.6)	15.9 (1.7)	0.01
Reference diameter (mm)
Before	3.18 (0.42)	3.22 (0.37)	0.69
After	3.18 (0.40)	3.17 (0.33)	0.91
At follow up	3.15 (0.39)	3.16 (0.40)	0.92
Minimal luminal diameter (mm)
Before	0.52 (0.26)	0.62 (0.35)	0.14
After	2.95 (0.60)	3.11 (0.54)	0.24
At follow up	1.87 (0.93)	2.56 (0.86)	0.002
Stenosis (%)
Before	83.4 (8.4)	80.5 (10.0)	0.15
After	8.9 (10.0)	4.8 (9.4)	0.06
At follow up	41.0 (28.1)	21.9 (22.8)	0.003
Gain (mm)	2.39 (0.67)	2.48 (0.64)	0.55
Loss (mm)	1.19 (0.87)	0.62 (0.69)	0.004
Net gain (mm)	1.41 (0.93)	1.99 (0.92)	0.01
Diameter stenosis >50% at follow up	28 (30.4%)	14 (15.7%)	0.019

Data are mean (SD).