Table 1

Characteristics of acute myocardial infarction (AMI) cases and controls by age cohort

Age 60Age 65Age 70Age 75
Cases*Controls†CasesControlsCasesControlsCasesControls
Number of participants418612 55810 88232 64618 43255 29619 09857 294
Total person-years of follow-up (mean)46 686 (11.2)150 471 (12.0)93 056 (8.6)299 841 (9.2)114 700 (6.2)370 006 (6.7)91 884 (4.8)298 140 (5.2)
Deaths during follow-up (%)1220 (29%)2008 (16%)3070 (28%)5782 (18%)5186 (28%)10 557 (19%)5895 (31%)12 674 (22%)
Transferred during follow-up (%)900 (22%)3035 (24%)1986 (18%)6597 (20%)2693 (15%)8781 (16%)2733 (14%)8971 (16%)
Male (%)3367 (80%)10 101 (80%)8402 (77%)25 206 (77%)13 567 (74%)40 701 (74%)13 163 (69%)39 489 (69%)
Angina (%)1924 (46%)594 (5%)5161 (47%)2445 (7%)8623 (47%)5528 (10%)9122 (48%)7472 (13%)
Heart failure (%)205 (5%)61 (0%)676 (6%)338 (1%)1568 (9%)982 (2%)2198 (12%)1674 (3%)
Other cardiovascular conditions (%)979 (23%)681 (5%)3154 (29%)2941 (9%)6591 (36%)7672 (14%)8205 (43%)11 674 (20%)
Chronic kidney disease (%)1 (0%)0 (0%)4 (0%)8 (0%)965 (5%)1392 (3%)1872 (10%)3039 (5%)
Diabetes (%)449 (11%)624 (5%)1622 (15%)2297 (7%)3398 (18%)5573 (10%)3726 (20%)6876 (12%)
Hypercholesterolaemia (%)1634 (39%)1907 (15%)4228 (39%)7423 (23%)6392 (35%)14 936 (27%)6395 (33%)15 814 (28%)
Hypertension (%)1168 (28%)1991 (16%)3750 (34%)7608 (23%)7411 (40%)17 955 (32%)8579 (45%)22 330 (39%)
Alcohol consumer (%)‡3385 (81%)10 997 (88%)8780 (81%)28 130 (86%)14 494 (79%)45 962 (83%)14 293 (75%)45 504 (79%)
Overweight (%)‡2427 (58%)7239 (58%)5866 (54%)17 609 (54%)9406 (51%)28 253 (51%)9264 (49%)28 030 (49%)
Obese (%)‡750 (18%)1418 (11%)2295 (21%)4687 (14%)4107 (22%)9180 (17%)3848 (20%)9365 (16%)
Ex-smoker (%)‡1274 (30%)2398 (19%)4611 (42%)10 903 (33%)8335 (45%)19 305 (35%)8695 (46%)20 641 (36%)
Smoker (%)‡1163 (28%)3507 (28%)2203 (20%)6544 (20%)3079 (17%)8973 (16%)2545 (13%)7660 (13%)
  • *Participants with a history of AMI.

  • †Participants with no history of AMI.

  • ‡Mean 10 imputed datasets.