Table 1

Baseline clinical characteristics

CharacteristicIntervention (n=150)Control (n=150)p Value
Risk factor
 Age (years)63.4±1064.3±100.45
 Male sex107 (71)112 (75)0.52
 Hypertension103/145 (71)111/144 (78)0.19
 Dyslipidaemia113/145 (78)117/144 (81)0.48
 Diabetes mellitus51/149 (34)55 (37)0.66
 Active smoking27 (18)20 (13)0.27
CAD
 Previous MI50/140 (36)61/140 (44)0.18
 Previous CABG25 (17)41 (27)0.03
 Previous PCI60 (40)64/146 (44)0.50
 Previous coronary angiography87/149 (58)93/145 (64)0.31
Comorbidity
 Congestive heart failure13/135 (10)23/141 (16)0.10
 Chronic renal failure14/148 (9)25/143 (17)0.04
 Atrial flutter or fibrillation3/146 (2)5/143 (4)0.50
Bleeding risk factors
 Previous peptic ulcer8/146 (5)14/143 (10)0.17
 Previous GI bleeding3/146 (2)6/144 (4)0.33
 Previous non-GI bleeding10/145 (7)7/144 (5)0.46
 Warfarin therapy1 (1)2 (1)0.62
 Baseline Hg (g/l)136 (125–143)135 (124–146)0.98
Indication for PCI0.19
 Stable angina20 (13)22 (15)
 Unstable angina62 (41)81 (54)
 NSTEMI19 (13)12 (8)
 STEMI28 (17)18 (12)
 Silent ischaemia3 (2)4 (3)
 Other18 (12)13 (9)
Provenance0.06
 Home (elective procedure)48 (32)68 (45)
 Emergency department14 (9)13 (9)
 Transferred to our hospital88 (59)69 (46)
  • Values are mean±SD, n (%), n/N (%) or median (25th–75th centile).

  • CABG, coronary artery bypass graft; CAD, coronary artery disease; GI, gastrointestinal; Hg, haemoglobin; MI, myocardial infarction; NSTEMI, non-ST elevation MI; PCI, percutaneous coronary intervention; STEMI, ST-elevation MI.