Table 2. Univariate and multivariate analyses of risk factors on CLNM in PTC patients.
| Variables | Number of patients | CLNM | |
|---|---|---|---|
| OR (95% CI) | P value | ||
| Univariate analyses | |||
| Age (years) | 0.951 (0.930, 0.972) | <0.001 | |
| Gender (male vs. female) | 107 vs. 299 | 1.672 (1.070, 2.613) | 0.024 |
| Number of tumors (multiple vs. single) | 120 vs. 286 | 1.200 (0.778, 1.852) | 0.409 |
| Location of tumors (bilateral vs. unilateral) | 75 vs. 331 | 1.647 (0.994, 2.727) | 0.053 |
| T stage (III and II vs. I) | 15 vs. 391 | 1.026 (0.358, 2.940) | 0.962 |
| Capsule invasion (presence vs. absence) | 44 vs. 362 | 0.683 (0.364, 1.280) | 0.234 |
| NLR | 3.474 (2.489, 4.848) | <0.001 | |
| PLR | 1.018 (1.012, 1.024) | <0.001 | |
| LMR | 0.941 (0.830, 1.068) | 0.348 | |
| SII | 1.006 (1.004, 1.007) | <0.001 | |
| Multivariate analyses | |||
| Age (years) | 0.924 (0.909, 0.940) | <0.001 | |
| Gender (male vs. female) | 1.781 (1.060, 2.993) | 0.029 | |
| Location of tumors (bilateral vs. unilateral) | 2.229 (1.228, 4.046) | 0.008 | |
| NLR | 0.066 | ||
| PLR | 0.310 | ||
| SII | 1.005 (1.004, 1.006) | <0.001 | |
CLNM, central lymph node metastasis; PTC, papillary thyroid carcinoma; OR, odds ratio; CI, confidence interval; NLR, neutrophil-to-lymphocyte ratio; PLR, platelet-to-lymphocyte ratio; LMR, lymphocyte-to-monocyte ratio; SII, systemic immune-inflammation index.