Table 1.
Characteristics of the three subject groups
| Normal control (n=493) | IHD control (n=427) | MI survivor (n=828) | Normal control v IHD control OR (95% CI) | Normal control v MI survivor OR (95% CI) | |
| Men | 251 (51%) | 217 (51%) | 606 (73%) | 0.99 (0.75 to 1.3) | 2.57 (1.93 to 3.43)* |
| Mean (SD) age (years) | 65 (5) | 65 (6) | 61 (7) | 1.0 (0.98 to 1.0) | 0.91 (0.89 to 0.93)* |
| Diabetes | 34 (6.9%) | 26 (6.1%) | 92 (11%) | 0.87 (0.51 to 1.5) | 1.46 (0.90 to 2.4) |
| Current smokers | 47 (9.5%) | 39 (9.1%) | 281 (34%) | 0.97 (0.60 to 1.6) | 6.36 (4.1 to 9.8)* |
| Former smokers | 297 (60%) | 260 (61%) | 378 (46%) | 1.0 (0.76 to 1.4) | 1.38 (0.99 to 1.9) |
| Hypertension | 328 (66%) | 289 (68%) | 399 (48%) | 1.0 (0.71 to 1.3) | 0.57 (0.44 to 0.75)* |
| Mean (SD) cholesterol (mmol/l) | 5.97 (1.1) | 5.97 (1.1) | 5.97 (1.1) | 0.99 (0.88 to 1.1) | 1.04 (0.92 to 1.18) |
| ECG criteria for LVH | 80 (16%) | 63 (15%) | 89 (11%) | 0.86 (0.59 to 1.2) | 0.62 (0.42 to 0.94)* |
*p<0.05.
Hypertension is defined as blood pressure greater than 140/90 mm Hg or a history of antihypertensive treatment.
CI, confidence interval; IHD, ischaemic heart disease; LVH, left ventricular hypertrophy; MI, myocardial infarction; OR, odds ratio.