Table 1.
Characteristics of patients with head and neck cancer and matched controls.
| Cases | Controls | |||
|---|---|---|---|---|
| (N = 71) | (N = 71) | |||
| Age, mean (SD) | 56 | (12) | 57 | (9.7) |
| Gender, N (%) | ||||
| Male | 61 | (86) | 61 | (86) |
| Female | 10 | (14) | 10 | (14) |
| Smoking Status, N (%) | ||||
| Ever | 55 | (73) | 55 | (73) |
| Never | 16 | (27) | 16 | (27) |
| Pack-years, N (%) | ||||
| <40 | 14 | (26) | 15 | (27) |
| 41–60 | 16 | (29) | 11 | (20) |
| >60 | 21 | (38) | 24 | (44) |
| Missing | 4 | (7) | 5 | (9) |
| BMI, mean (SD) | ||||
| Current | 26 | (5.3) | 28 | (4.6) |
| 10 years ago | 24 | (4.0) | 24 | (4.0) |
| Alcohol Consumption, N (%) | ||||
| Ever | 71 | (100) | 65 | (92) |
| Never | 0 | (0) | 5 | (7) |
| Missing | 0 | (0) | 1 | (1) |
| Drink-years, N (%) | ||||
| <20 | 18 | (25) | 16 | (24) |
| 21–40 | 17 | (24) | 13 | (20) |
| 41–60 | 9 | (13) | 9 | (14) |
| >60 | 24 | (34) | 18 | (28) |
| Missing | 3 | (4) | 9 | (14) |
| Education level, N (%) | ||||
| <College | 38 | (54) | 17 | (24) |
| ≥College | 33 | (46) | 53 | (75) |
| Missing | 0 | (0) | 1 | (1) |
| Married or living as married, N (%) | ||||
| Yes | 42 | (60) | 54 | (76) |
| No | 28 | (39) | 17 | (24) |
| Missing | 1 | (1) | 0 | (0) |
| NSAID use, N (%) | ||||
| Never | 25 | (35) | 10 | (14) |
| Occasional | 27 | (38) | 24 | (34) |
| Daily | 19 | (27) | 37 | (52) |
| Type of NSAID *, N (%) | ||||
| Aspirin | 14 | (75) | 29 | (78) |
| Other | 3 | (16) | 5 | (14) |
| Missing | 2 | (11) | 3 | (8) |
| Reason for using NSAID *, N (%) | ||||
| Headache | 2 | (11) | 0 | (0) |
| Heart disease | 9 | (47) | 24 | (65) |
| Other | 7 | (37) | 11 | (30) |
| Missing | 1 | (5) | 2 | (5) |
| Age of NSAID use initiation, mean (SD)* | 56 | (9.4) | 56 | (9.3) |
| NSAID tablet years *, N (%) | ||||
| <2 | 6 | (32) | 7 | (19) |
| 2-3 | 0 | (0) | 7 | (19) |
| >3 | 8 | (42) | 13 | (35) |
| Missing | 5 | (26) | 10 | (27) |
*Among daily users.
Missing data: Current BMI unknown for 2 subjects, 10 years ago unknown for 8 subjects, age at NSAID initiation unknown for 5 subjects.
SD: Standard Deviation.