TABLE 1.
Selected demographic characteristics of and risk factors for cases with AMI and controls1
| Characteristics | Cases (n = 751) | Controls (n = 1443) | P |
| Baseline measurements | |||
| Age at interview, y | 59.5 ± 7.9 | 59.3 ± 7.8 | Matched |
| Women, % | 35.0 | 35.0 | Matched |
| BMI, kg/m2 | 23.2 ± 3.1 | 22.9 ± 3.0 | 0.024 |
| Higher education,2 % | 25.8 | 28.8 | 0.032 |
| Current smoker, % | 34.3 | 22.3 | <0.001 |
| Low physical activity,3 % | 74.0 | 67.6 | 0.009 |
| History of hypertension, % | 29.4 | 18.8 | <0.001 |
| History of diabetes, % | 15.7 | 7.0 | <0.001 |
| Plasma concentrations | |||
| LDL cholesterol, mmol/L | 3.34 ± 0.87 | 3.18 ± 0.80 | <0.001 |
| HDL cholesterol, mmol/L | 1.28 ± 0.30 | 1.34 ± 0.33 | <0.001 |
| TGs, mmol/L | 1.67 ± 0.69 | 1.56 ± 0.67 | <0.001 |
| HbA1c, % | 6.64 ± 1.63 | 6.14 ± 1.13 | <0.001 |
| hsCRP,4 mg/L | 1.5 (0.7, 3.5) | 1.0 (0.5, 2.3) | <0.001 |
| Creatinine, μmol/L | 77.17 ± 56.63 | 69.96 ± 29.39 | 0.001 |
| Blood pressure measurements, mm Hg | |||
| Systolic blood pressure | 149.3 ± 24.3 | 140.2 ± 21.5 | <0.001 |
| Diastolic blood pressure | 83.4 ± 14.2 | 80.7 ± 10.4 | <0.001 |
1
Values are means ± SDs for continuous variables and percentages for categorical variables unless otherwise indicated. P values were estimated on the basis of univariate conditional logistic regression. AMI, acute myocardial infarction; HbA1c, glycated hemoglobin; hsCRP, high-sensitivity C-reactive protein.
2
Secondary school and above.
3
0 h/wk of moderate and strenuous activity.
4
Values are medians (25th, 75th percentiles).