Table 1.
Characteristics of Patients With Oropharyngeal Cancer From Hawaii, Iowa, and Los Angeles Included or Not Included in the Study (1984-2004)
| Characteristic | Included in the Study (n = 271) |
Not Included in the Study (n = 5,484) |
χ2P | ||
|---|---|---|---|---|---|
| No. | % | No. | % | ||
| Age, years | .18 | ||||
| < 50 | 51 | 18.8 | 880 | 16.0 | |
| 50-59 | 83 | 30.6 | 1,480 | 27.0 | |
| 60-69 | 78 | 28.8 | 1,675 | 3.5 | |
| 70+ | 59 | 21.8 | 1,449 | 26.4 | |
| Sex | .01 | ||||
| Male | 217 | 80.1 | 4,019 | 73.3 | |
| Female | 54 | 19.9 | 1,465 | 26.7 | |
| Race | < .001 | ||||
| White | 171 | 63.1 | 4,541 | 82.8 | |
| Black | 37 | 13.7 | 587 | 1.7 | |
| Other* | 63 | 23.2 | 356 | 6.5 | |
| Calendar years | < .001 | ||||
| 1984-1989 | 52 | 19.2 | 1,440 | 26.3 | |
| 1990-1994 | 78 | 28.8 | 1,198 | 21.8 | |
| 1995-1999 | 95 | 35.0 | 1,236 | 22.5 | |
| 2000-2004 | 46 | 17.0 | 1,610 | 29.4 | |
| Registry | < .001 | ||||
| Hawaii | 117 | 43.2 | 436 | 7.9 | |
| Iowa | 33 | 12.2 | 1,209 | 22.1 | |
| Los Angeles, California | 121 | 44.6 | 3,839 | 7.0 | |
| Stage | .16 | ||||
| Localized | 78 | 29.9 | 1,721 | 33.6 | |
| Regional | 155 | 59.4 | 2,741 | 53.4 | |
| Distant | 28 | 10.7 | 667 | 13.0 | |
NOTE. Oropharyngeal cancers included those arising from the base of tongue (International Classification of Diseases for Oncology, 3rd Edition [ICD-O-3]; code C019), lingual and palatine tonsil (C024 and C090-099), and oropharynx (C100-109). Patients were restricted to those with squamous cell histologies (ICD-O-3 codes 8050-8076, 8078, 8083, 8084, and 8094).
*
Includes all other races and ethnicities (Asian, n = 1; Chinese, n = 8; Filipino, n = 17; Hawaiian, n = 12; Japanese, n = 15; Korean, n = 2; Pacific Islander, n = 4; Vietnamese, n = 1; and other, n = 3).