Table 4. Multivariate analysis of demographic, pathologic and treatment factors associated with the time interval between surgery and radiotherapy (S–RT interval).
| Factor | Adjusted S–RT interval (days)a | 95% Confidence interval |
|---|---|---|
| Chemotherapy | ||
| No | 45.6 | 44.2–46.9 |
| Yes | 57.7 | 55.2–60.3 |
| Stage | ||
| I | 52.5 | 50.5–54.7 |
| I/II | 48.8 | 50.8–53.2 |
| II | 52.0 | 42.9–58.3 |
| II/III | 54.5 | 52.0–57.0 |
| III | 50.0 | 47.2–50.3 |
| Time period at diagnosis | ||
| 1986–1988 | 31.2 | 29.8–32.7 |
| 1989–1990 | 37.8 | 35.9–39.8 |
| 1991–1992 | 45.5 | 43.5–47.6 |
| 1993–1994 | 61.2 | 58.7–63.8 |
| 1995–1996 | 66.4 | 63.8–69.2 |
| 1997–1998 | 83.3 | 80.0–86.8 |
| Travel time (min) | ||
| <15 | 53.2 | 51.2–55.2 |
| 15–22 | 53.0 | 50.8–55.2 |
| 23–29 | 51.5 | 49.3–53.7 |
| 30+ | 47.7 | 46.0–49.5 |
| RT centre | ||
| A | 55.3 | 54.2–56.5 |
| B | 47.6 | 44.8–50.5 |
a
Adjusted for CT, stage, time period, RT centre, Carstairs category and travel time.