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Table 1 Comparison of Veterans excluded from analytic cohort based on missing data, having concurrent noncardiac conditions or do not resuscitate order at presentation

From: Factors associated with presenting >12 hours after symptom onset of acute myocardial infarction among Veteran men

  Included n = 335 Excluded n = 170 P
  %(n) %(n)  
Late presentation* 68.4 (231) 30.6 (50) <0.01
Demographics
 Age 64.4 ±10.5 (335) 68 ±11.1 (163) <0.01
 Male 100 (335) 95.3 (162) 0.01
 Lives alone 29.6 (99) 27.1 (46) 0.56
 Attended some college/vocational 57 (191) 40 (68) <0.01
 Miles from home zip to VHA facility 48.4 ±123 (199) 47.5 ±71.8 (79) 0.96
 Employment status    <0.01
   Full time 21.4 (67) 10.1 (15)  
   Part time 13.7 (43) 8.1 (12)  
   Not employed 64.9 (203) 81.8 (121)  
 Family history of CAD 47.9 (146) 50 (70) 0.91
Presentation characteristics
 STEMI 18.2 (61) 11.2 (19) 0.04
 Angina episodes in previous 24 h    <0.01
  0-1 38.5 (129) 54.7 (93)  
  ≥2 30.1 (101) 12.4 (21)  
  Missing 31.3 (105) 32.9 (56)  
 Tertiary facility 90.1 (302) 80.6 (137) 0.03
Medical History
 ≥1 angina episode per day over prior 4 weeks 24.2 (81) 20.6 (35) 0.37
 Cardiac procedure (PCI or CABG) 39.4 (132) 45.3 (77) 0.2
 Prior myocardial infarction 38.2 (128) 38.2 (65) 0.99
 Prior congestive heart failure 16.1 (54) 30.6 (52) <0.01
 Prior stroke 12.8 (43) 12.9 (22) 0.97
 Diabetes 41.5 (139) 51.8 (88) 0.03
 PTSD 12.2 (41) 8.8 (15) 0.25
 Alcohol or substance abuse 20.2 (67) 17.6 (30) 0.53
  1. * Late presentation is hospital admission >12 hours after symptom onset of acute myocardial infarction.
  2. CAD coronary artery disease; STEMI ST elevation myocardial infarction; PCI percutaneous coronary intervention; CABG coronary artery bypass grafting; PTSD post traumatic stress disorder.