4.
Univariate and multivariate logistic regression for LLNM
| Independent variable | Univariate | Multivariate | |||
| OR (95%CI) | P | OR (95%CI) | P | ||
| Gender | 0.242 | ||||
| Female | 1 (reference) | - | - | ||
| Male | 1.403 (0.828–2.378) | - | |||
| Age, years | 0.119 | ||||
| < 45 | 1 (reference) | - | - | ||
| ≥ 45 | 0.684 (0.426–1.096) | - | |||
| PTMC with HT | 0.461 | ||||
| Yes | 1 (reference) | - | - | ||
| No | 0.803 (0.465–1.387) | - | |||
| Tumor size (mm) | 0.000 | 0.219 | |||
| ≤ 6 | 1 (reference) | 1 (reference) | |||
| > 6 | 2.890 (1.783–4.687) | 1.392 (0.822–2.359) | |||
| Extrathyroidal extension | 0.000 | 0.055 | |||
| Yes | 1 (reference) | 1 (reference) | |||
| No | 0.288 (0.147–0.566) | 0.496 (0.242–1.015) | |||
| Multifocal | 0.000 | 0.267 | |||
| Yes | 1 (reference) | 1 (reference) | |||
| No | 0.382 (0.235–0.622) | 0.668 (0.328–1.362) | |||
| Bilateralism | 0.002 | 0.582 | |||
| Yes | 1 (reference) | 1 (reference) | |||
| No | 0.455 (0.280–0.737) | 1.224 (0.595–2.519） | |||
| Subtype | 0.759 | ||||
| Classical | 1 (reference) | - | - | ||
| Follicular | 1.646 (0.381–7.115) | 0.808 | - | - | |
| Hürthle cell variant | 1.051 (1.038–1.063) | 1.000 | - | ||
| Solitary letion | 0.046 | ||||
| Upper third | 1 (reference) | - | - | ||
| Middle third | 0.224 (0.064–0.783) | 0.014 | - | ||
| Lower third | 0.550 (0.249–1.215) | 0.159 | - | ||
| Isthmus | 1.051 (1.025–1.077) | 0.619 | - | ||
| CLNM | 0.000 | 0.000 | |||
| Negative | 1 (reference) | 1 (reference) | |||
| Positive | 35.077 (14.048–87.587) | 29.354 (11.631–74.084) | |||
| Recurrence | 0.000 | 0.000 | |||
| Yes | 1 (reference) | 1 (reference) | |||
| No | 30.051 (12.458–80.551) | 25.254 (10.352–66.217) | |||