Table 1.
Selected means and proportions for characteristics of participantsin the NIH-AARP Diet and Health Study by red meat quintile from the RFQ (n=300,948)
| Quintiles of red meat intake, g/1000 kcal |
|||||
|---|---|---|---|---|---|
| Characteristics | Q1 | Q2 | Q3 | Q4 | Q5 |
| Mean intake of red meat (g/1000 kcal) | 8.9 | 20.8 | 30.8 | 42.3 | 66.5 |
| Gender (% male) | 45.1 | 51.1 | 58.0 | 64.5 | 72.7 |
| Age (years) | 63.1 | 63.1 | 63.0 | 62.8 | 62.2 |
| Education, college graduate or post graduate (%) | 46.7 | 41.7 | 40.6 | 39.0 | 37.3 |
| Race (%) | |||||
| Non-Hispanic White | 89.0 | 92.1 | 93.1 | 94.2 | 94.4 |
| Non-Hispanic Black | 5.2 | 3.7 | 3.1 | 2.5 | 2.0 |
| Hispanic | 2.1 | 1.6 | 1.5 | 1.4 | 1.6 |
| Asian, Pacific Islander, American Indian, Alaskan Native | 2.2 | 1.5 | 1.3 | 1.1 | 1.1 |
| Family history of colorectal cancer (%) | 10.0 | 10.1 | 10.1 | 9.5 | 9.3 |
| Body mass index, kg/m2 | 25.6 | 26.5 | 27.0 | 27.4 | 28.2 |
| Smoking history (%) | |||||
| Never smoker | 41.2 | 38.4 | 35.9 | 33.8 | 30.8 |
| Former smoker | 47.6 | 47.6 | 48.3 | 48.5 | 48.8 |
| Current smoker or having quit <1 year ago | 7.7 | 10.7 | 12.7 | 14.4 | 17.1 |
| Vigorous physical activity, >5 times per week (%) | 27.7 | 21.3 | 18.6 | 17.1 | 15.8 |
| Regular† use of NSAIDs (%) | 63.3 | 66.7 | 68.0 | 68.2 | 67.9 |
| Dietary variables (mean intake) | |||||
| Energy (kcal/day) | 1685 | 1741 | 1812 | 1879 | 1978 |
| Alcohol (g/day) | 11.9 | 13.5 | 12.9 | 12.2 | 11.0 |
| Calcium (mg/1000kcal) | 501 | 467 | 435 | 405 | 361 |
| Fiber (g/1000kcal) | 13.8 | 11.5 | 10.7 | 10.0 | 9.1 |
| Fruits (cup equivalents/1000kcal) | 1.7 | 1.3 | 1.1 | 1.0 | 0.8 |
| Vegetables (cup equivalents/1000kcal) | 1.3 | 1.1 | 1.1 | 1.1 | 1.0 |
†
Defined as 2-3 times per month or more