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

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

 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

 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