Table 2.
Descriptive statistics by county: endoscopy sample (male and female, 2001-2005)
| Description | Mean | Std Dev | Min | Max |
|---|---|---|---|---|
| Percent of the FFS Medicare sample who used colonoscopy or sigmoidoscopy screening in 2001-2005 | 36.92 | 6.17 | 14.90 | 66.67 |
| Percent of the FFS Medicare sample aged 75-84 | 33.23 | 3.42 | 12.77 | 48.08 |
| Percent of the FFS Medicare sample aged 85+ | 6.70 | 1.68 | 0.00 | 14.77 |
| Percent of the FFS Medicare sample either with ESRD/disabled or having dual eligibility | 20.03 | 10.51 | 0.00 | 84.21 |
| Percent of the FFS Medicare sample who are white | 91.5 | 12.5 | 3.6 | 100 |
| Percent of the FFS Medicare sample who are Black | 5.98 | 10.81 | 0.00 | 74.95 |
| Percent of the FFS Medicare sample who are Hispanic | 0.92 | 3.46 | 0.00 | 43.54 |
| Percent of the FFS Medicare sample who are other races, non-white | 1.57 | 6.50 | 0.00 | 96.36 |
| Percent of the FFS Medicare sample who moved in 2001-2005 | 9.30 | 6.23 | 0.00 | 98.64 |
| Averaged distance from FFS Medicare sample member residential ZIP codes to endoscopy providers in 2001-2005 (miles) | 10.2 | 18.1 | 0.07 | 473.64 |
| Percent of county level penetration by all managed care plans in 2001 | 10.00 | 12.47 | 0.00 | 89.50 |
| Population density (per square mile) | 0.24 | 1.66 | 0.00 | 67.11 |
| Percent of the county population in poverty in 2003 | 13.73 | 5.77 | 0.00 | 43.50 |