Table 3.
Demographics and Exposure Characteristics of Patients with Incident NPC (1999-2008) for Whom Pathology Specimens Were Available for HPV Testing.†
| No. of Patients (%) | ||||
|---|---|---|---|---|
|
| ||||
| Characteristic | All (n = 30) |
WHO Type I (n = 8) |
WHO Type II/III (n = 22) |
P value* |
| Age, years | ||||
| <30 | 4 (13.3) | 0 (0) | 4 (18.2) | .230 |
| 30-59 | 15 (50.0) | 3 (37.5) | 12 (54.5) | |
| ≥60 | 11 (36.7) | 5 (62.5) | 6 (27.3) | |
| Sex | ||||
| Male | 22 (73.3) | 6 (75.0) | 16 (72.7) | 1.0 |
| Female | 8 (26.7) | 2 (25.0) | 6 (27.3) | |
| Ethnicity | ||||
| Non-Hispanic White | 19 (63.3) | 6 (75.0) | 13 (59.1) | .851 |
| Asian | 5 (16.7) | 1 (12.5) | 4 (18.2) | |
| Other | 6 (20.0) | 1 (12.5) | 5 (22.7) | |
| Smoking | ||||
| Never | 13 (43.3) | 2 (25.0) | 11 (50.0) | .441 |
| Former | 7 (23.3) | 2 (25.0) | 5 (22.7) | |
| Current | 10 (33.3) | 4 (50.0) | 6 (27.3) | |
| Pack-years of ever smokers | ||||
| <30 pack-years | 7 (23.3) | 0 (0) | 7 (31.8) | .035 |
| ≥30 pack-years | 10 (33.3) | 6 (75.0) | 4 (18.2) | |
| Alcohol use | ||||
| Never/rare | 18 (60.0) | 5 (62.5) | 13 (59.1) | .059 |
| Former | 5 (16.7) | 3 (37.5) | 2 (9.1) | |
| Current | 7 (23.3) | 0 (0) | 7 (31.8) | |
| History of cancer in first-degree relative | ||||
| None | 15 (50.0) | 2 (25.0) | 13 (59.1) | .215 |
| Any cancer | 15 (50.0) | 6 (75.0) | 9 (40.9) | |
WHO = World Health Organization.
*
Fisher's exact test comparing WHO type I to WHO type II/III.
†
Includes one WHO-I NPC patient with prevalent disease.