Table II.
Study population demographic and tumor characteristics following propensity adjustment
| Characteristic | Partial Nephrectomy |
Radical Nephrectomy |
P Value |
|---|---|---|---|
| Tumor size (cm) | 2.8±0.8 | 2.8±0.9 | 0.534 |
| Charlson Co-Morbidity Index | 0.87±1.2 | 0.89±1.3 | 0.491 |
| Gender | |||
| Male | 1,551 (56.7) | 1,551 (56.1) | 0.34 |
| Female | 1,183 (43.3) | 1,211 (43.9) | |
| Race/Ethnicity | 0.401 | ||
| Caucasian | 2,308 (84.4) | 2,356 (85.3) | |
| African American | 256 (9.4) | 237 (8.6) | |
| Asian | 51 (1.9) | 50 (1.8) | |
| Hispanic | 62 (2.3) | 61 (2.2) | |
| Other | 58 (2.1) | 58 (2.1) | |
| Marriage Status | 0.258 | ||
| Not married | 1,004 (36.7) | 1,033 (37.4) | |
| Married | 1,730.5 (63.6) | 1,728.5 (62.6) | |
| Area of residence | 0.433 | ||
| Non-metropolitan | 416 (15.2) | 409 (14.8) | |
| Metropolitan | 2,318 (84.8) | 2,352.7 (85.2) | |
| Histologic Type | 0.220 | ||
| Clear cell | 2,256 (82.5) | 2,286 (82.7) | |
| Papillary | 327 (12.0) | 322 (11.6) | |
| Chromophobe* | <150 (<6%) | <150 (<6%) | |
| Adenocarcinoma | <11 | <11 | |
| Grade | 0.27 | ||
| 1 | 520 (19.0) | 498 (18.0) | |
| 2 | 1,146 (41.9) | 1,161 (42.1) | |
| 3 | 339 (12.4) | 343 (12.4) | |
| 4 | 39 (1.4) | 37 (1.4) | |
| missing | 690 (25.2) | 721.5 (26.1) | |
| SEER Region | 0.7219 | ||
| San Francisco | 79 (2.9) | 86 (3.1) | |
| Connecticut | 214 (7.8) | 210 (7.6) | |
| Detroit | 261 (9.6) | 270 (9.8) | |
| Hawaii* | <40 (<2%) | <40 (<2%) | |
| Iowa | 211 (7.7) | 215 (7.8) | |
| New Mexico | 52 (1.9) | 53 (1.9) | |
| Seattle | 151 (5.5) | 154 (5.6) | |
| Utah | 56 (2.1) | 57 (2.1) | |
| Atlanta | 58 (2.1) | 60 (2.2) | |
| San Jose | 59 (2.2) | 53 (1.9) | |
| Los Angeles | 257 (9.4) | 255 (9.2) | |
| Rural Georgia | <11 | <11 | |
| Greater California | 366 (13.4) | 380 (13.8) | |
| Kentucky | 275 (10.1) | 255 (9.3) | |
| Louisiana | 208 (7.6) | 208 (7.5) | |
| New Jersey | 450 (16.5) | 463 (16.8) | |
| Socioeconomic Status | |||
| Median household income per tract for zip code ($) | 49,996±21,379.5 | 50,111.0±21,234.0 | 0.674 |
| Percent residents per tract living below poverty level | 8.8±11.4 | 8.7±11.1 | 0.392 |
| Percent of persons 25+ per tract with <12 years education | 18.7±12.0 | 18.5±11.8 | 0.402 |
To protect patient confidentiality, results with 11 patients or less are reported as N<11 and percentages in the respective columns were rounded in increments of 1%. To avoid derivation of the omitted cells, totals from the next smallest group (*) from each covariate category were similarly altered.