Table 1.
Relative excess risk of death (RERs), with respective standard errors (SE) and p-values by geographical area, with Europe as reference, for each site.
| Site | Geographical area | RER* | SE | p-value |
|---|---|---|---|---|
| Oral cavity | Europe | 1 | ||
| Japan | 0.59 | 0.01 | <0.0001 | |
| Taiwan | 0.66 | 0.01 | <0.0001 | |
| Hypopharynx | Europe | 1 | ||
| Japan | 0.52 | 0.01 | <0.0001 | |
| Taiwan | 0.79 | 0.02 | <0.0001 | |
| Larynx | Europe | 1 | ||
| Japan | 0.58 | 0.01 | <0.0001 | |
| Taiwan | 0.92 | 0.04 | 0.046 | |
| Nasal cavity and paranasal sinuses | Europe | 1 | ||
| Japan | 0.85 | 0.03 | <0.0001 | |
| Taiwan | 0.94 | 0.07 | 0.44 | |
| Major salivary gland | Europe | 1 | ||
| Japan | 0.82 | 0.03 | <0.0001 | |
| Taiwan | 0.65 | 0.05 | <0.0001 | |
| Oropharynx | Europe | 1 | ||
| Japan | 0.45 | 0.01 | <0.0001 | |
| Taiwan | 0.93 | 0.02 | 0.0047 | |
| Nasopharynx | Europe | 1 | ||
| Japan | 0.42 | 0.02 | <0.0001 | |
| Taiwan | 0.58 | 0.02 | <0.0001 |
*RERs are adjusted by time since diagnosis, age, sex, subsite (for oral cavity, hypopharynx, larynx, nasal cavity and paranasal sinuses, and major salivary gland) and histological subtype group (for oropharynx and nasopharynx).