Table 1. Baseline characteristics of the included and excluded patients.

Variable	Study population (n = 563)	Excluded subjects (n = 140)	P
Age, year	67.0 ± 11.8	68.2 ± 10.2	0.270
Male,%	329 (58.4)	92 (65.7)	0.124
Hypertension,%	390 (69.3)	105 (75.0)	0.184
Diabetes mellitus,%	151 (26.8)	38 (27.1)	0.939
Hyperlipidemia,%	72 (12.8)	19 (13.5)	0.507
Coronary heart disease,%	99 (17.6)	28 (19.9)	0.536
Smoking,%	207 (37.0)	59 (42.1)	0.265