Table 3.
Sensitivity, specificity, and negative predictive value
| Character | Assessment of β-hCG | Transvaginal ultrasound |
|
| ||
| Sensitivity | 95.2% | 68.5% |
|
| ||
| Specificity | 86.7% | 64.5% |
|
| ||
| Positive predictive | 84% | 77% |
|
| ||
| Negative predictive | 70% | 30.% |
|
| ||
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