Table 3.
The effect of treatment stratified by stage
| Treatment† | No. of cases at risk | Person time (yrs) | No. of deaths | HR | 95% CI |
|---|---|---|---|---|---|
|
Stage I | |||||
| Surgery | 147 | 1760 | 10 | 1.00 | ref |
| Radiation | 110 | 548 | 15 | 1.51 | .89–2.56 |
| Both | 120 | 446 | 15 | 1.33 | .76–2.32 |
| None | 16 | 68 | 3 | 2.23* | 1.01–5.03 |
|
| |||||
|
Stage II | |||||
| Surgery | 46 | 139 | 8 | 1.00 | ref |
| Radiation | 166 | 679 | 41 | 1.63 | 0.78–3.41 |
| Both | 97 | 349 | 18 | 1.35 | 0.60–3.05 |
| None | 13 | 408 | 2 | 2.57 | 0.91–7.22 |
|
| |||||
|
Stage III/IV | |||||
| Surgery | 34 | 71 | 8 | 1.00 | ref |
| Radiation | 144 | 371 | 47 | 0.91 | 0.55–1.51 |
| Both | 93 | 217 | 24 | 0.71 | 0.40–1.25 |
| None | 24 | 39 | 8 | 1.94* | 1.04–3.61 |
†
Model adjusted for Age, Year of Diagnosis, Tumor Size, and Grade
*
Significant at p-value < 0.05