Table 1.
Selected characteristics of respondents aged ≥ 50 years
| Characteristic | Value* | N |
| Age, yrs | 64.6 ± 10.1 | 84,284 |
| Body mass index (BMI), kg/m2 | 30.2 ± 6.2 | 84,284 |
| Sex, % | ||
| Men | 38.2 | 32,179 |
| Women | 61.8 | 52,106 |
| Race, % | ||
| White | 82.3 | 68,639 |
| Non-white | 17.7 | 14,778 |
| Health insurance, % | ||
| Yes | 93.0 | 78,260 |
| No | 7.0 | 5,904 |
| Smoking, % | ||
| Current smoker | 18.2 | 15,265 |
| Former smoker | 35.4 | 29,709 |
| Never smoker | 46.4 | 38,959 |
| Ever had fecal occult blood test (FOBT), % | ||
| Yes | 43.0 | 37,498 |
| No | 53.9 | 49,123 |
| Ever had screening sigmoidoscopy (SIG), % | ||
| Yes | 45.3 | 39,574 |
| No | 51.1 | 46,584 |
| Screening fecal occult blood test (FOBT), % | ||
| within past year | 53.2 | 18,449 |
| greater that 1 year | 46.8 | 16,238 |
| Screening sigmoidoscopy (SIG), % | ||
| within past 5 years | 81.8 | 30,465 |
| greater than 5 years | 18.2 | 6,771 |
* Plus-minus values are means ± standard deviation