Table 1

 Baseline characteristics of patients discharged after a first acute myocardial infarction during the periods 1998–2001 and 1988–1991

1988–1991 (n = 36108)1998–2001 (n = 25376)
MenWomenMenWomen
*Data are mean (median); †primary or secondary discharge diagnosis in the previous five years or secondary discharge coding at time of admission with index myocardial infarction; ‡includes influenza, pneumonia, and chronic lower respiratory diseases.
CHD, coronary heart disease.
Total 1998–200120985 (58.1%)15123 (41.9%)14953 (58.9%)10423 (41.1%)
Age (years)*64.4 (65.0)71.6 (73.0)65.0 (66.0)72.9 (74.0)
Age group (years)
    <554892 (23.3%)1378 (9.1%)3677 (24.6%)987 (9.5%)
    55–645997 (28.6%)2840 (18.8%)3713 (24.8%)1573 (15.1%)
    65–746036 (28.8%)4726 (31.3%)4132 (27.6%)3046 (29.2%)
    75–843518 (16.8%)4767 (31.5%)2768 (18.5%)3296 (31.6%)
    ⩾85542 (2.6%)1412 (9.3%)663 (4.4%)1521 (14.6%)
Deprivation categories
    I (least deprived)3416 (16.3%)2325 (15.4%)2665 (17.8%)1837 (17.6%)
    II3856 (18.4%)2715 (18.0%)2950 (19.7%)1935 (18.6%)
    III3850 (18.3%)2784 (18.4%)3057 (20.4%)2108 (20.2%)
    IV4156 (19.8%)3096 (20.5%)2927 (19.6%)2146 (20.6%)
    V (most deprived)4437 (21.1%)3409 (22.5%)2991 (20.0%)2261 (21.7%)
    Missing data1270 (6.1%)794 (5.3%)363 (2.4%)136 (1.3%)
Prior admission or co-morbidity†
    CHD2187 (10.4%)1577 (10.4%)1297 (8.7%)857 (8.2%)
    Other heart disease4048 (19.3%)3619 (23.9%)3901 (26.1%)3305 (31.7%)
    Stroke743 (5.0%)604 (5.8%)909 (4.3%)962 (6.4%)
    Peripheral arterial disease850 (5.7%)561 (5.4%)825 (3.9%)539 (3.6%)
    Respiratory disease‡1154 (5.5%)799 (5.3%)1396 (9.3%)1149 (11.0%)
    Malignancy823 (3.9%)559 (3.7%)1038 (6.9%)697 (6.7%)
    Diabetes mellitus940 (4.5%)907 (6.0%)162 (1.1%)160 (1.5%)
    Any of above8274 (39.4%)6851 (45.3%)7018 (46.9%)5510 (52.9%)