Table 2.
Univariate and multivariate logistic regression model for cartilage surgery (1 = resected, 0 = spared)
| Variable | Univariable | Multivariable | ||
|---|---|---|---|---|
| OR (95% CI) | p Value | OR (95% CI) | p Value | |
| Age (categorized) | ||||
| ≤65 | 1 | 0.2758 | 1 | 0.3079 |
| >65 | 1.31 (0.81–2.14) | 1.35 (0.76–2.42) | ||
| Ulceration | ||||
| No | 1 | 0.0722 | 1 | 0.2164 |
| Yes | 1.90 (0.90–4.03) | 1.56 (0.58–4.17) | ||
| Unknown | 0.63 (0.31–1.27) | 0.51 (0.20–1.27) | ||
| Breslow (categorized) | ||||
| ≤1 | 1 | 0.0121 | 1 | 0.2294 |
| 1.1–2.0 | 1.96 (1.07–3.57) | 1.56 (0.74–3.29) | ||
| 2.1–4.0 | 3.84 (1.66–8.92) | 3.70 (1.16–11.79) | ||
| >4 | 1.96 (0.77–4.97) | 3.08 (0.84–11.28) | ||
| Unknown | 48430 (0.00–3E180) | 26320 (0.00–7E174) | ||
| Mitoses (categorized) | ||||
| 0 | 1 | 0.2250 | 1 | 0.1598 |
| 1–2 | 1.60 (0.79–3.23) | 2.01 (0.84–4.79) | ||
| 3–4 | 0.97 (0.44–2.16) | 0.54 (0.20–1.47) | ||
| ≥5 | 1.79 (0.90–3.57) | 0.81 (0.31–2.16) | ||
| Unknown | 0.82 (0.37–1.84) | 1.09 (0.39–3.03) | ||
| Primary location (simplified) | ||||
| Anterior | 1 | <0.0001 | 1 | <0.0001 |
| Posterior | 0.11 (0.05–0.21) | 0.08 (0.04–0.17) | ||
| Ear, NOS | 1.07 (0.57–2.00) | 1.14 (0.60–2.16) | ||
OR odds ratio, CI confidence interval, NOS not otherwise specified