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Table 1 Descriptive statistics on the number of insured individuals, exposures in person-years, and events by type of transition, sex, income group, and period

From: Widening or narrowing income inequalities in myocardial infarction? Time trends in life years free of myocardial infarction and after incidence

  Men Women
Low Higher Total Low Higher Total
Period 1: 2006–2008
MI incidence
N 159,464 126,681 286,145 342,983 101,232 444,215
Exposures 431,720 342,316 774,036 948,054 274,743 1,222,797
Events 5069 3445 8514 6800 1703 8503
Rate1) 11.74 10.06 10.99 7.17 6.20 6.95
Death without MI
N 159,464 126,681 286,145 342,983 101,232 444,215
Exposures 431,722 342,320 774,041 948,057 274,743 1,222,800
Events 20,276 12,202 32,478 39,125 8829 47,954
Rate1) 46.97 35.65 41.96 41.27 32.14 39.22
Death after MI
N 5150 3500 8650 6828 1722 8550
Exposures 5308 3619 8927 6525 1647 8172
Events 1844 1148 2992 2821 676 3497
Rate1) 347.40 317.21 335.16 432.33 410.44 409.01
Period 2: 2015–2017
MI incidence
N 199,895 132,857 332,752 339,396 111,501 450,897
Exposures 537,024 355,987 893,011 929,177 301,173 1,230,350
Events 6514 3334 9848 6422 1750 8172
Rate1) 12.13 9.36 11.03 6.91 5.81 6.64
Death without MI
N 199,895 132,857 332,752 339,396 111,501 450,897
Exposures 537,030 355,998 893,028 929,183 301,176 1,230,358
Events 27,432 11,680 39,112 40,017 10,419 50,436
Rate1) 51.08 32.81 43.80 43.07 34.60 41.00
Death after MI
N 6635 3431 10,066 6468 1769 8237
Exposures 7328 3629 10,958 6803 1836 8640
Events 2257 1001 3258 2390 634 3024
Rate1) 308.00 275.83 297.32 351.32 345.32 350.00
  1. 1Crude rate per 1000 person-years of exposure