Table 1.
Patient characteristics (N=1508)
| Characteristic | % of sample (no. of patients) |
|---|---|
| Median age (y) (interquartile range) | 51 (44-57 years) |
| Year of diagnosis | |
| 1999 | 0.4 (6) |
| 2000 | 1.2 (18) |
| 2001 | 2.0 (30) |
| 2002 | 3.5 (53) |
| 2003 | 5.8 (87) |
| 2004 | 6.9 (104) |
| 2005 | 8.8 (133) |
| 2006 | 7.2 (109) |
| 2007 | 9.7 (146) |
| 2008 | 13.1 (197) |
| 2009 | 12.7 (192) |
| 2010 | 16.6 (251) |
| 2011 | 12.1 (182) |
| Pelvic/para-aortic node involvement | 15.0 (226) |
| Hydronephrosis | 13.7 (207) |
| Type of insurance* | |
| HMO/capitation | 13.9 (209) |
| PPO/other | 86.1 (1299) |
| Beneficiary role | |
| Employee | 66.4 (1001) |
| Spouse/dependent | 33.6 (507) |
| Geographic region | |
| Northeast | 13.0 (191) |
| Midwest | 25.4 (375) |
| South | 49.0 (722) |
| West | 12.7 (186) |
| Rural/urban population density (persons per county) | |
| ≤20,000 | 6.2 (91) |
| >20,001-250,000 | 42.1 (620) |
| >250,001-1,000,000 | 31.7 (467) |
| >1,000,000-2,000,000 | 9.6 (141) |
| >2,000,000 | 10.5 (155) |
| No. of radiation oncologists per HSA | |
| 0 | 26.9 (397) |
| 1-5 | 30.5 (450) |
| 6-10 | 9.4 (139) |
| 10-20 | 11.9 (162) |
| 20-50 | 14.8 (218) |
| >50 | 7.3 (108) |
| No. of internal medicine subspecialists per HSA | |
| 0 | 3.3 (48) |
| 1-50 | 14.9 (220) |
| 51-100 | 27.9 (411) |
| 101-200 | 36.6 (539) |
| >200 | 17.4 (256) |
| No. of gynecologist subspecialists per HSA | |
| 0 | 14.2 (209) |
| 1-5 | 7.2 (106) |
| 6-10 | 14.0 (206) |
| 10-20 | 45.7 (674) |
| >20 | 18.9 (279) |
Abbreviations: HSA = health service area; HMO = health maintenance organization; PPO = preferred provider organization.
*
For variables derived from the Area Health Resource File, values are based on the 1474 patients linked to this data source.