Table 1

Baseline Patient Demographics, Procedural Details, and Unadjusted Outcomes

No Thrombectomy (n = 59,228)Thrombectomy (n = 38,948)p Value
Age, yrs65 ± 1362 ± 13<0.001
Male43,291 (73)29,595 (76)<0.001
Smoking status<0.001
 Never17,804 (34)11,389 (32)
 Ex-smoker14,305 (27)9,394 (26)
 Current20,207 (39)15,100 (42)
Diabetes mellitus8,349 (15)4,780 (13)<0.001
Hypertension24,012 (42)14,845 (38)<0.001
Hypercholesterolemia22,940 (40)14,827 (38)<0.001
Peripheral vascular disease2,019 (4)1,075 (3)<0.001
Renal disease1,091 (2)538 (1)<0.001
Previous myocardial infarction7,931 (14)4,089 (11)<0.001
Previous stroke2,220 (4)1,331 (3)0.001
Previous percutaneous coronary intervention5,283 (9)3,376 (9)0.061
Previous coronary artery bypass graft16,040 (27)14,055 (36)<0.001
Left ventricular ejection fraction<0.001
 ≥50%11,486 (57)6,162 (53)
 31%–49%6,152 (31)4,126 (36)
 ≤30%2,513 (12)1,306 (11)
Pre-procedure TIMI flow grade<0.001
 TIMI 031,905 (64)27,744 (82)
 TIMI 14,829 (10)1,949 (6)
 TIMI 25,892 (12)2,128 (6)
 TIMI 37,537 (15)1,816 (5)
Cardiogenic shock4,112 (7)2,757 (7)0.585
Ventilatory support2,159 (4)1,313 (4)0.304
Circulatory support2,830 (5)2,037 (5)<0.001
Glycoprotein IIb/IIIa inhibitors27,778 (49)20,280 (55)<0.001
Antiplatelet therapy<0.001
 Clopidogrel33,664 (78)17,180 (64)
 Prasugrel7,220 (17)6,616 (25)
 Ticagrelor2,408 (6)3,104 (12)
Bivalirudin5,025 (9)6,991 (19)<0.001
Embolic protection device213 (0.4)294 (0.8)<0.001
Stent<0.001
 None4,898 (8)2,373 (6)
 Bare-metal29,104 (50)14,917 (39)
 Drug-eluting24,661 (42)21,426 (55)
Radial access27,179 (47)24,868 (64)<0.001
Vessel attempted
 Venous or arterial graft1,143 (2)666 (2)0.011
 Left main stem artery1,499 (3)749 (2)<0.001
 Left anterior descending artery26,361 (45)16,387 (42)<0.001
 Left circumflex artery10,229 (17)5,420 (14)<0.001
 Right coronary artery24,134 (41)17,482 (45)<0.001
Post-procedure TIMI flow grade<0.001
 TIMI 03,854 (8)955 (3)
 TIMI 1747 (1)349 (1)
 TIMI 22,474 (5)1,855 (5)
 TIMI 343,333 (86)30,810 (91)
Symptom to balloon time, h4.6 ± 3.94.2 ± 3.5<0.001
Year<0.001
 20062,621 (4)122 (0.3)
 20074,185 (7)285 (0.7)
 20085,862 (10)1,310 (3)
 20097,334 (12)3,880 (10)
 20108,162 (14)6,719 (17)
 20119,845 (17)8,280 (21)
 201210,951 (18)9,176 (24)
 201310,268 (17)9,176 (24)
Reinfarction (during index admission)108 (0.2)57 (0.2)0.197
Stroke (during index admission)157 (0.3)116 (0.3)0.303
30-Day mortality3,863 (7)2,142 (6)<0.001
1-Year mortality6,123 (11)3,289 (9)<0.001

Values are mean ± SD for age and for symptom-to-balloon time; for remaining variables, values are n(%), where n denotes absolute number of cases and % indicates this as a percentage of all cases for which data was available for that variable.

TIMI = Thrombolysis In Myocardial Infarction.