Table 8.
Multivariate Cox regression for SPT development in the head and neck area. Table 8 describes the results of the multivariate Cox regression of all SPT with respect to localization in the head and neck area (0 = SPT outside head and neck, 1 = SPT in head and neck) regressed on the independent variables tumor HPV positivity (negative = 0, positive = 1), smoking status (0 = <10 py, 1 = ≥10 py), alcohol status (0 = no alcohol abuse, 1 = alcohol abuse), and age (in years). * indicates statistical significance at the 5% significance level. Abbreviations: CI = confidence interval, HR = hazard ratio, py = pack years.
| Multivariate Cox Regression for SPT Development in the Head and Neck | SPT in Head and Neck | |
|---|---|---|
| Parameter | HR (95% CI) |
p-Value |
| Tumor HPV-positivity | 1.102 (0.629–1.930) |
0.734 |
| Smoking (>10 py) | 3.513 (1.154–10.693) |
0.027 * |
| Alcohol abuse | 1.301 (0.730–2.319) |
0.372 |
| Age | 0.934 (0.886–0.985) |
0.012 * |
| Number of observations | 21 | |