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| IMRT characteristics | |
|---|---|
| Treatment duration in days; median (IQR) | 43 (34–56) |
| Total prescribed dose in Grays; median (IQR) | 70 (60–72) |
| Number of treatment fractions; median (IQR) | 33 (30–35) |
| Dose per fraction in Grays; median (IQR) | 2.12 (1.8–2.2) |
| Neck boost; n (%) | 163 (60.6) |
