Table 4.
Adjusted Hazard Ratio and unadjusted Restricted Mean Survival Time for post-operative adjuvant radiotherapy initiation time and duration of radiation therapy.
| PORT Initiation Time(Days) | Duration of Radiation Therapy(Days) | HR(95% CI) | RMST(95% CI) |
|---|---|---|---|
| <42 | <55 | 1 | 4.31 (4.28, 4.33) |
| <42 | 55–64 | 1.21 (1.07, 1.37) | 4.08 (4.02, 4.14) |
| <42 | 64+ | 1.39 (1.20, 1.62) | 3.82 (3.73, 3.91) |
| 42 to 48 | <55 | 1.07 (0.99, 1.17) | 4.10 (4.06, 4.14) |
| 42 to 48 | 55–64 | 1.36 (1.14, 1.61) | 4.00 (3.90, 4.11) |
| 42 to 48 | 64+ | 1.40 (1.13, 1.74) | 3.71 (3.55, 3.87) |
| 49+ | <55 | 1.17 (1.09, 1.25) | 3.95 (3.92, 3.98) |
| 49+ | 55–64 | 1.49 (1.35, 1.66) | 3.71 (3.64, 3.77) |
| 49+ | 64+ | 1.84 (1.62, 2.09) | 3.47 (3.38, 3.57) |
PORT: Post-Operative Adjuvant Radiation Time; HR: Hazard Ratio; CI: Confidence Interval; RMST: Restricted Mean Survival Time