Table 2.
Cox regression analysis of the risk for recurrence after ultrasound-guided-fine-needle aspiration drainage
| Univariate | Multivariate | |||||
|---|---|---|---|---|---|---|
| HR | 95% CI | P | HR | 95% CI | P | |
| Gender (male/female) | 1.11 | 0.91-1.36 | 0.29 | 1.05 | 0.85-1.29 | 0.64 |
| Age (≥50/<50) | 1.10 | 0.91-1.34 | 0.32 | 1.08 | 0.88-1.33 | 0.44 |
| Diagnosis | ||||||
| Thyroid cyst | 1 | 1 | ||||
| Parotid cyst | 0.71 | 0.46-1.08 | 0.11 | 0.15 | 0.45-1.06 | 0.09 |
| Thyroglossal duct cyst | 0.85 | 0.61-1.18 | 0.32 | 0.92 | 0.65-1.29 | 0.63 |
| Branchial cleft cyst | 1.48 | 0.73-2.98 | 0.28 | 1.28 | 0.63-2.60 | 0.50 |
| Ranula | 2.43 | 1.21-4.91 | 0.01* | 2.44 | 1.19-4.99 | 0.02* |
| Size (cm) | ||||||
| Pre-FNA AP (≥1.2/<1.2) | 1.45 | 1.15-1.83 | 0.002* | 1.13 | 0.85-1.51 | 0.39 |
| Pre-FNA L (≥2.0/<2.0) | 1.46 | 1.20-1.78 | <0.001* | 1.19 | 0.92-1.53 | 0.18 |
| Post-FNA AP (≥0.5/<0.5) | 1.45 | 1.19-1.77 | <0.001* | 1.22 | 0.97-1.53 | 0.10 |
| Post-FNA L (≥0.8/<0.8) | 1.58 | 1.30-1.93 | <0.001* | 1.32 | 1.04-1.67 | 0.02* |
*P<0.05. L: Lateral, AP: Anteroposterior, FNA: Fine-needle aspiration, HR: Hazard ratio, CI: Confidence interval