Table 3. Restenosis and survival rate of the patients during follow-up.

Index	1-year	2-year	3-year	4-year	5-year
Restenosis rate in the experimental group (%)	6.9	11.5	19.1	26.0	35.9
Restenosis rate in the control group (%)	27.6	37.0	49.6	59.8	74.8
χ2	19.512	23.072	26.730	30.279	39.483
P	<0.001	<0.001	<0.001	<0.001	<0.001
Survival rate in the experimental group (%)	97.7	92.4	88.5	83.2	76.3
Survival rate in the control group (%)	96.1	85.8	80.3	71.7	62.2
χ2	2.183	2.850	3.338	4.938	6.061
P	0.140	0.091	0.068	0.001	0.02