Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Comparison of Preoperative Ultrasound Predictions of Central-Region Lymph Node Metastasis
| N | Ultrasonic Staging | Total | Sensitivity = 1.00 | ||
|---|---|---|---|---|---|
| cN1a | cN0 | Specificity = 47.00% | |||
| Pathological stage | pN1a | 7 | 53 | 60 | PPV = 11.67% |
| pN0 | 0 | 47 | 47 | NPV = 1.00 | |
| Total | 7 | 100 | 107 | Matching rate = 50.47% | |
Abbreviations: PPV, positive predictive value; NPV, negative predictive value.
