Table 5.
Multivariate model for predicting SLN positivity with age based on quartiles demonstrates a trend that increasing age is associated with decreased SLN positivity.
| Variable | Hazard ratio | 95% confidence interval | P value |
|---|---|---|---|
| Male | 1.76 | 1.28–2.42 | 0.001 |
| Age | |||
| <30 versus 31–40 yrs | 1.01 | 0.56–1.85 | 0.96 |
| <30 versus 41–50 yrs | 0.68 | 0.39–1.20 | 0.19 |
| <30 versus 51–60 yrs | 0.75 | 0.43–1.31 | 0.31 |
| <30 versus ≥61 yrs | 0.53 | 0.30–0.91 | 0.02 |
| Breslow depth (≥1 mm) | 7.38 | 2.68–20.30 | <0.001 |
| Ulceration | 2.13 | 1.54–2.94 | <0.001 |
| Head and neck site | 0.80 | 0.53–1.22 | 0.31 |