Table 4.
A logistic regression model to determine the odds ratio (OR) and 95% confidence interval (95%CI) as a measure of association with whether the cancer was categorized as prevalent (vs. not prevalent), last cytology and human papillomavirus (HPV) test results before cancer diagnosis, and histologic diagnosis category. Abbreviations: SCC, squamous cell carcinoma; ADC, adenocarcinoma
| Cofactor | N | % | OR | 95%CI |
|---|---|---|---|---|
| Last HPV result before diagnosis | ||||
| negative (ref) | 91 | 14.6% | 1.0 | --- |
| positive | 532 | 85.4% | 1.3 | 0.73–2.2 |
| Last cytology result before diagnosis | ||||
| negative | 109 | 17.5% | 0.48 | 0.25–0.92 |
| Low grade (ref) | 88 | 14.1% | 1.0 | --- |
| High grade | 426 | 68.4% | 1.9 | 1.2–3.1 |
| Diagnosis | ||||
| SCC (ref) | 351 | 56.3% | 1.0 | --- |
| ADC | 212 | 34.0% | 0.54 | 0.37–0.78 |
| Microinvasive | 41 | 6.6% | 0.79 | 0.39–1.6 |
| Other | 19 | 3.1% | 0.49 | 0.17–1.4 |
| Race | ||||
| Unknown | 28 | 4.5% | 7.9 | 2.2–28 |
| Caucasian (ref) | 346 | 55.5% | 1.0 | --- |
| African American | 42 | 6.7% | 0.99 | 0.49–2.0 |
| Other | 207 | 33.2% | 1.0 | 0.72–1.5 |