Table 1 Characteristics of study subjects
From: Microsatellite mutations in buccal cells are associated with aging and head and neck carcinoma
| Â | Cases ( N =25) | Controls ( N =31) | Total ( N =56) |
|---|---|---|---|
Age (median, range) | 54 (31–73) | 51 (36–82) | 53 (31–82) |
Sex | |||
 Male | 19 | 14 | 33 |
 Female | 6 | 17 | 23 |
Race | |||
 White | 22 | 30 | 52 |
 Black | 3 | 0 | 3 |
 Other | 0 | 1 | 1 |
Tobacco use | |||
 Never | 3 | 10 | 13 |
 Former | 6 | 11 | 17 |
 Current | 16 | 10 | 26 |
Alcohol abuse a | |||
 Yes | 4 | 2 | 6 |
 No | 21 | 29 | 50 |
Tumour site | |||
 Oral cavity | 10 | N/A | N/A |
 Oropharynx | 4 |  |  |
 Larynx | 10 |  |  |
 Hypopharynx | 1 |  |  |
Treatment modalities | |||
 Radiation therapy only | 5 | N/A | N/A |
 Chemotherapy only | 1 |  |  |
 Radiation and chemotherapy | 9 |  |  |
 Surgery only | 10 |  |  |