Table 2.

In-hospital complications.

	All (n = 920)	Years 1–4 (n = 301)	Years 5–9 (n = 619)	P value
Any complication	86 (9.3)	23 (7.6)	63 (10.2)	0.230
Major complication	43 (4.7)	9 (3.0)	34 (5.5)	0.098
Major adverse cardiovascular events	23 (2.5)	4 (1.3)	19 (3.1)	0.175
In-hospital death	3 (0.3)	1 (0.3)	2 (0.3)	1.0
Stroke	2 (0.2)	1 (0.3)	1 (0.2)	0.548
Periprocedural MI	18 (2.0)	2 (0.7)	16 (2.6)	0.072
Coronary complications	37 (4.0)	13 (4.3)	24 (3.9)	0.724
CTO vessel	27 (2.9)	10 (3.3)	17 (2.7)	0.678
Donor vessel	10 (1.1)	3 (1.0)	7 (1.1)	1.0
Coronary perforation	28 (3.0)	10 (3.3)	18 (2.9)	0.838
Ellis type 2 or more	18 (2.0)	8 (2.7)	10 (1.6)	0.314
Requiring intervention	12 (1.3)	3 (1.0)	9 (1.5)	0.760
Vascular complications	30 (3.3)	6 (2.0)	24 (3.9)	0.166
Retroperitoneal hematoma	3 (0.3)	1 (0.3)	2 (0.3)	1.0
Hematoma > 5 cm	12 (1.3)	5 (1.7)	7 (1.1)	0.542
Pseudoaneurysm	12 (1.3)	0 (0)	12 (1.9)	0.011
Acute limb ischemia	3 (0.3)	0 (0.5)	3 (0.5)	0.555
Major vascular complication	9 (1.0)	3 (1.0)	6 (1.0)	1.0
Others
Pericardial effusion	16 (1.7)	6 (2.0)	10 (1.6)	0.789
Major bleeding	9 (1.0)	3 (1.0)	6 (1.0)	1.0
Contrast-induced nephropathy	16 (1.7)	4 (1.3)	12 (1.9)	0.601
Myocardial injury
hsTroponin T, baseline (ng/L)	15 (9–30)	18 (10–40)	14 (9–25)	0.003
hsTroponin T, day 1 (ng/L)	43 (22–110)	33 (18–90)	50 (24–127)	<0.001
Coronary procedure-related myocardial injury	462 (71.0)	154 (61.1)	308 (77.2)	<0.001

CTO, chronic total occlusion; hsTroponin T, high-sensitivity troponin T; MI, myocardial infarction. Troponin values are median with interquartile range. Dichotomous variables are reported as number (percentages). Significant p values below 0.05 are shown in bold.