Table 1

Baseline characteristics by enrolment year

Japanese-PCI (J-PCI) 2014J-PCI 2015J-PCI 2016P value
n=210 544n=217 989n=240 648
Demographics
  Age, years, mean (SD)69.97 (10.99)70.08 (11.04)70.26 (11.07)<0.001
  Female50 747 (24.1)52 048 (23.9)57 677 (24.0)0.218
Diagnosis<0.001
  Elective setting
   Stable angina80 244 (38.1)83 258 (38.2)91 894 (38.2)
   Silent ischaemic heart disease33 550 (15.9)36 431 (16.7)41 764 (17.4)
   Old myocardial infarction12 528 (6.0)13 034 (6.0)14 152 (5.9)
  Acute setting
   Unstable angina33 985 (16.1)33 582 (15.4)37 599 (15.6)
   Myocardial infarction (MI)50 237 (23.9)51 684 (23.7)55 239 (23.0)
    STEMI39 140 (18.6)40 050 (18.4)41 740 (17.3)
    NSTEMI9217 (4.4)9844 (4.5)11 453 (4.8)
Risk factors
  Previous PCI96 877 (46.2)99 896 (46.6)110 163 (46.5)0.022
  Previous CABG8871 (4.2)8525 (4.0)8949 (3.8)<0.001
  Previous MI48 620 (23.4)49 547 (23.3)54 073 (22.9)0.001
  Diabetes mellitus90 152 (42.8)94 250 (43.2)105 066 (43.7)<0.001
  Hypertension155 985 (74.1)162 075 (74.4)178 889 (74.3)0.083
  Dyslipidaemia130 740 (62.1)137 264 (63.0)153 059 (63.6)<0.001
  Current smoker64 368 (30.6)67 385 (30.9)74 027 (30.8)0.054
  Renal insufficiency35 366 (16.8)37 857 (17.4)43 460 (18.1)<0.001
   On dialysis13 099 (6.2)13 649 (6.3)15 601 (6.5)<0.001
  Chronic lung disease3347 (1.6)4039 (1.9)5336 (2.2)<0.001
  Peripheral vascular disease13 273 (6.3)15 169 (7.0)18 064 (7.5)<0.001
  Previous heart failure26 105 (12.8)27 667 (13.1)31 478 (13.4)<0.001
  Cardiopulmonary arrest on arrival3285 (1.6)3311 (1.6)4137 (1.7)<0.001
  Cardiogenic shock within 24 hours6023 (2.9)6307 (3.0)7429 (3.1)<0.001
  Acute heart failure within 24 hours8217 (4.0)8082 (3.8)9347 (4.0)0.001
Lesion characteristics
 No of diseased vessels
  One-vessel disease126 593 (60.1)133 649 (61.3)150 477 (62.5)<0.001
  Two-vessel disease55 997 (26.6)56 117 (25.7)60 936 (25.3)<0.001
  Three-vessel disease27 205 (12.9)27 371 (12.6)28 424 (11.8)<0.001
  Left main trunk8322 (4.0)9129 (4.2)9688 (4.0)<0.001
 Lesion location
  RCA73 309 (34.8)74 356 (34.1)81 482 (33.9)<0.001
  LAD/left Main106 996 (50.8)111 132 (51.0)123 788 (51.4)<0.001
  LCX54 314 (25.8)55 638 (25.5)60 444 (25.1)<0.001
  Bypass graft2163 (1.0)1189 (0.5)1202 (0.5)<0.001
Procedure details
 Approach<0.001
  Transradial127 686 (60.6)138 397 (63.5)161 104 (66.9)
  Transfemoral71 473 (33.9)67 668 (31.0)67 166 (27.9)
  Others (eg, brachial)11 376 (5.4)11 924 (5.5)12 378 (5.1)
 Device
  Thrombus aspiration*21551/39140 (55.1)21640/40050 (54.0)22605/41740 (54.2)<0.001
  Distal protection7392 (3.5)8077 (3.7)7519 (3.1)<0.001
  Rotablator7294 (3.5)7686 (3.5)8910 (3.7)<0.001
  Drug-eluting balloon12 922 (6.1)15 769 (7.2)22 916 (9.5)<0.001
 Stent characteristics
  Type of stent
  Drug-eluting stent166 194 (78.9)184 327 (84.6)206 323 (85.7)<0.001
  Bare metal stent14 854 (7.1)7807 (3.6)4966 (2.1)<0.001
 TIMI flow (post-procedure)
  Flow 3205 978 (97.8)213 709 (98.0)235 969 (98.1)<0.001
  • *Confined to patients with STEMI.

  • CABG, coronary artery bypass grafting; LAD, left anterior descending; LCX, left circumflex; NSTEMI, non-ST-elevation myocardial infarction; PCI, percutaneous coronary intervention; RCA, right coronary artery; STEMI, ST-elevation myocardial infarction; TIMI, Thrombolysis in Myocardial Infarction.