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Table 1 Clinical characteristics of patients < 80 years with Type 1 myocardial infarction, Norway 2013–2016 (n = 28,404)

From: Unsatisfactory risk factor control and high rate of new cardiovascular events in patients with myocardial infarction and prior coronary artery disease

  Prior coronary artery disease No prior coronary artery disease p
n = 7219 n = 21,185  
  Missing data   Missing data
Male (n (%)) 5785 (80) 0 (0) 15,277 (72) 0 (0) < 0.001
Mean age (years (SD)) 67 (10) 0 (0) 62 (10) 0 (0) < 0.001
Prior coronary artery disease (n (%))
 Myocardial infarction 5638 (78) 29 (0.4)    
 Percutaneous coronary intervention 5072 (70) 58 (0.8)    
 Coronary artery bypass grafting 2228 (31) 9 (0.1)    
 Smoking (n (%))   408 (6)   1048 [5] < 0.001
 Never smoked 1417 [20]   5339 (25)   < 0.001
 Ex-smoker 3067 (43)   6290 (30)   < 0.001
 Smoker 2327 (32)   8508 (40)   < 0.001
Antihypertensive treatment (n (%)) 4262 (59) 43 (0.6) 8055 (38) 38 (0.2) < 0.001
Diabetes (n (%)) 2169 (30) 8 (0.1) 3052 (14) 13 (0.1) < 0.001
Medication prior to admission (n (%))
 Acetylsalicylic acid 5753 (80) 95 (1) 3668 (17) 176 (1) < 0.001
 Statins 5353 (74) 110 (2) 4013 (19) 186 (1) < 0.001
 Beta blockers 4720 (65) 131 (2) 2888 [14] 263 (1) < 0.001
 ACE/AII receptor inhibitors 3599 (50) 110 (2) 5474 (26) 227 (1) < 0.001
 Diuretics 1897 [26] 110 (2) 2752 [13] 206 (1) < 0.001
ST-elevation myocardial infarction (n (%)) 1395 [19] 235 (3) 8185 (39) 845 (4) < 0.001
Median systolic blood pressure (mmHg (25th, 75th percentile)) 140 (123, 159) 251 (4) 140 (124, 160) 688 (3) 0.02
Median diastolic blood pressure (mmHg (25th, 75th percentile)) 80 (70, 90) 251 (4) 82 (72, 93) 688 (3) < 0.001
Median HbA1c (% (25th, 75th percentile)) if diabetes 7.5 (6.6, 8.5) 1116 (52) 7.4 (6.6, 8.7) 1493 (49) 0.74
Median total cholesterol (mmol/L (25th, 75th percentile)) 4.1 (3.5, 5.0) 1809 [25] 5.2 (4.4, 6.0) 4534 (21) < 0.001
Median LDL cholesterol (mmol/L (25th, 75th percentile)) 2.3 (1.7, 3.0) 2790 (39) 3.4 (2.6, 4.1) 7441 (35) < 0.001
Median body mass index (kg/m2 (25th, 75th percentile) 27.3 (24.7, 30.2) 1323 [18] 26.9 (24.5, 29.9) 3265 (15) 0.01