Table I.
Sociodemographic and health behavior characteristics of the study population
| Cases n = 149 |
Controls n = 158 |
Pdifference | Crude ORa (95% CI) |
|
|---|---|---|---|---|
| Age | ||||
| Years, median (range) | 59.9 (21-80) | 59.5 (20-80) | 0.73b | --- |
| Race, n (%) | ||||
| White | 144 (96.6%) | 148 (93.7%) | 0.29c | 1.00 (reference) |
| Black | 5 (3.4%) | 10 (6.3%) | 0.50 (0.16-1.54) | |
| Family history of cancer, n (%) | ||||
| No | 52 (34.9%) | 71 (44.9%) | 0.08c | 1.00 (reference) |
| Yes | 97 (65.1%) | 87 (55.1%) | 1.56 (0.97-2.50) | |
| Highest level of education, n (%) | ||||
| High school or less | 100 (67.1%) | 48 (30.4%) | < 0.001c | 1.00 (reference) |
| Some college or tech school | 14 (9.4%) | 14 (8.9%) | 0.45 (0.20-1.03) | |
| College or more | 35 (23.5%) | 96 (60.8%) | 0.17 (0.10-0.29) | |
| Body mass index (BMI) | ||||
| kg/m2, median (range) | 26.6 (14.7-65.7) | 27.4 (18.1-47.8) | 0.37b | 1.00 (0.97-1.03)d |
| Smoking, n (%) | ||||
| Never smoker | 40 (26.9%) | 92 (58.2%) | < 0.001c | 1.00 (reference) |
| ≤ 10 pack-years | 17 (11.4%) | 28 (17.7%) | 1.40 (0.69-2.85) | |
| > 10 pack-years | 92 (61.7%) | 38 (24.1%) | 5.60 (3.29-9.52) | |
| Alcohol consumption | ||||
| Never drinker | 62 (41.6%) | 80 (50.6%) | 0.002c | 1.00 (reference) |
| ≤ 1 drink/day | 53 (35.6%) | 65 (41.1%) | 1.06 (0.65-1.75) | |
| > 1 drink/day | 34 (22.8%) | 13 (8.2%) | 3.46 (1.67-7.16) | |
| Tumor site, n (%) | ||||
| Oral cavity | 62 (41.6%) | --- | --- | |
| Pharynx | 53 (35.6%) | --- | --- | |
| Larynx | 34 (22.8%) | --- | --- |
Abbreviations: OR = odds ratio; CI = confidence interval
a
Crude models include the frequency-matched factor (age)
b
Rank-sum test
c
Fisher’s exact test
d
Per BMI unit increase, centered at the median (27.1 kg/m2)