Table 1.
Characteristics of the study population
| Study Variables | All specimens (n=388) | Biopsies (n=268) | Prostatectomies (n=120) | ||
|---|---|---|---|---|---|
|
| |||||
| Number | Percent | Number | Percent | ||
| Diagnosis age | |||||
| <65 | 232 | 134 | 50.0% | 98 | 81.7% |
| ≥65 | 156 | 134 | 50.0% | 22 | 18.3% |
| Race | |||||
| White | 190 | 130 | 48.5% | 60 | 50.0% |
| Black | 198 | 138 | 51.5% | 60 | 50.0% |
| Area-based measure of SES* | |||||
| Low | 166 | 120 | 44.8% | 46 | 38.3% |
| High | 222 | 148 | 55.2% | 74 | 61.7% |
| Disease stage | |||||
| Localized | 328 | 229 | 85.4% | 99 | 82.5% |
| Regional/Distant | 60 | 39 | 14.6% | 21 | 17.5% |
| PSA at diagnosis | |||||
| <10 ng/ml | 214 | 138 | 51.5% | 76 | 63.4% |
| ≥10 ng/ml | 118 | 96 | 35.8% | 22 | 18.3% |
| Not reported/missing | 56 | 34 | 12.7% | 22 | 18.3% |
| Facility type | |||||
| Freestanding laboratories | 95 | 95 | 35.4% | 0 | 0.0% |
| University hospitals | 111 | 71 | 26.5% | 40 | 33.3% |
| Large community hospitals | 115 | 56 | 20.9% | 59 | 49.2% |
| Small community hospitals | 67 | 46 | 17.2% | 21 | 17.5% |
*
Defined based on percent population in a census tract living below poverty level: low SES ≥ 10%, high SES <10%