Table 5.
Univariate and multivariate analyses
| Univariate analysis using Fisher's Exact Test | ||||
|---|---|---|---|---|
| Variable | Odds ratio | P value | 95% confidence interval | |
| Ethnicity: Hispanic | 9.293 | .024 | 1.4-75.8 | |
| Regional location: North/central | 8.980 | .036 | 1.1-218.6 | |
| Primary disease stage: Locally advanced | 7.126 | .062 | 0.9-173.5 | |
| Regional location: South | 0.164 | .162 | 0.8-148.8 | |
| Role of radiation therapy: Definitive | 3.416 | .174 | 0.5-27.8 | |
| Type of radiation planned: EBRT + brachy | 4.618 | .242 | 0.2-37.5 | |
| Type of radiation planned: EBRT | 0.285 | .300 | 0.1-28.2 | |
| Primary disease category: H&N | 3.060 | .333 | 0.1-24.4 | |
| Primary disease category: GYN | 2.933 | .344 | 0.1-23.4 | |
| Chemotherapy: Yes | 3.080 | .395 | 0.3-152.6 | |
| Age: <45 y | 2.258 | .415 | 0.1-17.9 | |
| Multivariate analysis | ||||
|---|---|---|---|---|
| Variable 1 | Variable 2 | Odds ratio | P value | 95% confidence interval |
| Ethnicity: Hispanic | Chemotherapy: Yes | 17.596 | .005 | 2.6-144.3 |
| Primary disease stage: Locally advanced | Chemotherapy: Yes | 11.576 | .019 | 1.1-570.5 |
Abbreviations: EBRT = external beam radiation therapy; GYN = gynecologic; H&N = head and neck.