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Table 1 Baseline characteristics of study population

From: Comparative effect of clopidogrel and aspirin versus aspirin alone on laboratory parameters: a retrospective, observational, cohort study

Characteristics Clopidogrel plus aspirin Aspirin alone p
  (n = 159) (n = 834)  
Age (years, mean ± SE) 64.6 ± 1.0 68.3 ± 0.4 0.0005
Women 32 (20.13%) 329 (39.45%) <0.0001
Medical history    
 Cerebrovascular disease 40 (25.16%) 375 (44.96%) <0.0001
 Ischemic heart disease 140 (88.05%) 536 (64.27%) <0.0001
 Liver disease 38 (23.9%) 369 (44.24%) <0.0001
 Kidney disease 57 (35.85%) 378 (45.32%) 0.0273
 Hypertension 107 (67.3%) 495 (59.35%) 0.0603
 Diabetes mellitus 122 (76.73%) 606 (72.66%) 0.2879
 Hyperlipidemia 147 (92.45%) 668 (80.10%) 0.0002
Current medication    
 Insulin 3 (1.89%) 60 (7.19%) 0.0119
 Oral hypoglycemic drug 25 (15.72%) 106 (12.71%) 0.3035
 Lipid-lowering drug 38 (23.9%) 144 (17.27%) 0.0476
 Antihypertensive drug 51 (32.08%) 590 (70.74%) <0.0001
  ARB 27 (16.98%) 199 (23.86%) 0.0579
  ACEI 4 (2.52%) 49 (5.88%) 0.0841
  Beta-blocker 7 (4.4%) 53 (6.35%) 0.3437
  CCB 39 (24.53%) 524 (62.83%) <0.0001
  Thiazide diuretic 9 (5.66%) 127 (15.23%) 0.0013
  Other 14 (8.81%) 80 (9.59%) 0.756
 NSAID 12 (7.55%) 191 (22.9%) <0.0001
 Steroid 4 (2.52%) 82 (9.83%) 0.0026
 H2 blocker 17 (10.69%) 455 (54.56%) <0.0001
 Proton pump inhibitor 19 (11.95%) 151 (18.11%) 0.059
 Antiepileptic drug 2 (1.26%) 55 (6.59%) 0.008
 Immunosuppressive drug 0 (0%) 18 (2.16%) 0.0616
 Diuretic 8 (5.03%) 129 (15.47%) 0.0005
 Antiarrhythmic drug 12 (7.55%) 104 (12.47%) 0.0765
  1. Data are numbers of individuals (%) unless otherwise stated. The item of other peripheral vascular disease is not presented because its number was zero. Abbreviations: ARB angiotensin II receptor blocker, ACEI angiotensin-converting enzyme inhibitor, CCB calcium channel blocker, NSAID non-steroidal anti-inflammatory drug, H2 blocker histamine2-receptor antagonist.