Previous IHD(n=274) No previous IHD (n=359) p Age, yrs 60.82 65.83 0.000 (1) Sex: Male Female 278 (82.8%) 81 (17.2%) 227 (77.4%) 47 (22.6%) 0.057 (1) Tobacco: Smoker Ex-smoker Non-smoker 79 (29.3%) 124 (45.9%) 67 (24.8%) 169 (47.9%) 87 (24.6%) 97 (27.5%) 0.000 (2) BMI, Kg/m2 28.23 28.55 0.380 (3) Hypertension 193 (72.0%) 185 (52.0%) 0.000 (1) Type 2 diabetes 1204 (4.3%) 81 (23.1%) 0.000 (1) AMI as a manifestation of ACS 185 (68.3%) 297 (83.4%) 0.000 (1) Angina as a manifestation of  ACS 92 (33.9%) 61 (17.1%) 0.000 (1)

Table 1: Characteristics of the 633 patients with acute coronary syndrome, according to a history of ischemic heart disease. (1) Fisher exact test, (2) chi-squared, (3) Anova test.