Table 4. Avoidance of salvage surgery at primary site.
| Site of disease | Estimate of proportion | 95% CI |
|---|---|---|
| Total | 23/54a (43%) | 30–56% |
| Laryngeal | 13/21 (62%) | 41–79% |
| Hypopharynx | 3/7 | — |
| Supraglottis | 7/11 | — |
| Glottis | 3/3 | — |
| Nonlaryngeal | 10/33 (30%) | 17–47% |
| Oral cavity | 4/19 | — |
| Oropharynx | 6/11 | — |
| Maxillary sinus | 0/3 | — |
a
Information not available on five patients – one died before starting therapy, one died before evaluation for response, two had complete response, but one was later lost to follow-up and two died of unknown causes.