Table 2.
Logistic Regression Results for No Receipt of 1 PSA Surveillance Test During a 1-year Interval
| OR (p-value) | 95% CI | |
|---|---|---|
| Years since treatment (1 is reference) | ||
| 2 | 2.77 (<.001) | 2.47-3.10 |
| 3 | 4.26 (<.001) | 3.78-4.79 |
| 4 | 5.45 (<.001) | 4.82-6.16 |
| 5 | 6.49 (<.001) | 5.71-7.37 |
| 6 or more | 9.67 (<.001) | 8.55-10.95 |
| Age at diagnosis | 1.02 (.004) | 1.01-1.03 |
|
| ||
| Not married at diagnosis | 1.21 (<.001) | 1.09-1.34 |
|
| ||
| State buy-in at diagnosis | 1.47 (<.001) | 1.24-1.75 |
|
| ||
| Tumor poorly differentiated | 1.06 (.328) | 0.95-1.18 |
|
| ||
| Pathologic classification T2 | 1.20 (.002) | 1.07-1.35 |
|
| ||
| NCI Comorbidity Index at Diagnosis | 1.06 (.450) | 0.91-1.25 |
|
| ||
| Race (Non-Hispanic White is reference) | ||
| Non-Hispanic Black | 1.29 (.011) | 1.06-1.56 |
| Hispanic | 1.32 (.003) | 1.10-1.59 |
| Other/Unknown | 1.01 (.960) | 0.77-1.32 |
|
| ||
| Person-year observations | 47,033 | |
| Men | 10,496 | |
| QIC | 34,713 | |
Note: OR: Odds ratio; CI: Confidence interval; PSA: Prostate-specific antigen; NCI: National Cancer Institute; QIC: Quasi-likelihood under the independence model information criterion. Robust standard errors used. Model also included controls for county characteristics and year of diagnosis.