Table 1.
Samples of patients with oral health measures in International Head and Neck Cancer Epidemiology contributing studies, overall and according to tumor sitea
| Entire sample | Oral cavity | Oropharynx | Hypopharynx and/or Larynx | Head and neck squamous cell carcinoma NOS | |
|---|---|---|---|---|---|
| No. (col. %) | No. (row %) | No. (row %) | No. (row %) | No. (row %) | |
| All participants | 2449 (100) | 621 (25) | 744 (30) | 865 (35) | 219 (9) |
|
| |||||
| North Carolina | 1182 (48) | 167 (14) | 324 (27) | 476 (40) | 215 (18) |
| Sao Paulo 2 | 455 (19) | 202 (44) | 110 (24) | 143 (31) | 0 (0) |
| Western Europe | 244 (10) | 84 (34) | 62 (25) | 94 (39) | 4 (2) |
| Head and Neck 5000 | 568 (23) | 168 (30) | 248 (44) | 152 (27) | 0 (0) |
a
Col = column; NOS = not otherwise specified.