Table 2.
Real data analysis and sensitivity analysis with respect to the probability of misattribution. Naïve, Weighted and Unweighted estimates obtained from a survival sample (n = 11, 485) cancer patients from SEER registry, and an external data set (nr = 373) from Hoffman et al. (2003) study. Naïve model assumes no misattribution. Last two columns (fixed misattribution) represent the results of a sensitivity analysis.
| Method: | Naive | Weighted | Unweighted | Sensitivity Analysis (Weighted) | |
|---|---|---|---|---|---|
| Misattribution: r | – | r̂ = 0.056 | r̂ = 0.056 | Fixed r =0.1 | Fixed r =0.2 |
| Hazard ratio: ϕ̂ | – | 0.127 (.119) | – | 0.266 (.124) | 1.060 (.181) |
|
| |||||
| Prostate Cancer Death | |||||
| Age - 50 | 0.025 (.003) | 0.015 (.004) | 0.018 (.004) | 0.006 (.004) | −0.011 (.004) |
| Distant Stage | 2.181 (.050) | 2.417 (.078) | 2.386 (.078) | 2.674 (.068) | 3.584 (.132) |
| Treatment | −0.368 (.051) | −0.293 (.062) | −0.323 (.062) | −0.203 (.071) | 0.018 (.093) |
|
| |||||
| Other Death | |||||
| Age - 50 | 0.076 (.002) | 0.077 (.002) | 0.076 (.002) | 0.078 (.002) | 0.075 (.002) |
| Distant Stage | 0.194 (.052) | 0.185 (.052) | 0.194 (.052) | 0.184 (.052) | 0.226 (.051) |
| Treatment | −0.516 (.033) | −0.521 (.033) | −0.516 (.033) | −0.525 (.032) | −0.517 (.031) |