Table 1.
Characteristics of the 21,120 US male physicians at 12 months post-randomization according to quintile of red meat consumption.
| Quintiles of red meat intake | |||||
|---|---|---|---|---|---|
| Q1 (low) (N=4056) |
Q2 (N=4659) |
Q3 (N=4599) |
Q4 (N=3980) |
Q5 (high) (N=3826) |
|
| Characteristics | Median* 1.5 (Range) (0 –2.0) |
3.5 (2.5 – 4.0) |
5.0 (4.5 – 6.0) |
6.5 (6.5 –7.0) |
9.5 (7.5 – 42)† |
| Age (years) | 55.5 ± 9.6 | 55.2 ± 9.7 | 54.5± 9.4 | 53.4 ± 9.1 | 54.4±9.3 |
| Body mass index (kg/m2) | 24.3±2.6 | 24.6±2.6 | 24.8±2.8 | 25.0±2.8 | 25.1±3.0 |
| Intake of breakfast cereal (%) | 67.2 | 66.8 | 68.4 | 69.9 | 64.4 |
| Current use of alcohol (%) | 80.8 | 87.4 | 86.4 | 86.6 | 84.1 |
| Current smokers (%) | 7.0 | 10.1 | 11.2 | 12.4 | 14.6 |
| Current exercise (%) | 86.7 | 86.1 | 87.2 | 87.6 | 85.1 |
| Myocardial infarction (%) | 0.4 | 0.4 | 0.3 | 0.2 | 0.2 |
| Parental history of MI (%) | 10.0 | 9.5 | 9.2 | 9.4 | 8.5 |
| Angina pectoris (%) | 3.2 | 2.5 | 2.4 | 1.8 | 1.4 |
| Coronary heart disease (%) | 3.4 | 2.7 | 2.5 | 1.9 | 1.5 |
| Hypertension (%) | 24.1 | 24.8 | 23.6 | 22.5 | 25.3 |
| Aspirin arm (%) | 51.5 | 49.8 | 50.1 | 48.8 | 50.0 |
| Atrial fibrillation (%) | 1.8 | 1.7 | 1.7 | 1.8 | 1.8 |
| Left ventricular hypertrophy (%) | 0.4 | 0.1 | 0.2 | 0.2 | 0.4 |
| Valvular heart disease (%) | 0.3 | 0.4 | 0.3 | 0.3 | 0.3 |
| Diabetes mellitus (%) | 2.9 | 3.2 | 2.6 | 2.8 | 4.3 |
Data are presented as mean ± standard deviation or percentages; MI = myocardial infarction.
*
Servings/week