Endometrial Volume Measured by VOCAL Compared to Office Hysteroscopy for Diagnosis of Endometrial Polyps in Premenopausal Women with Abnormal Uterine Bleeding
Table 3
Diagnostic value of 2D TVUS for identification of endometrial polyps examined against hysteroscopy as the gold standard test.
(a)
2D TVUS
Hysteroscopy
Polyp
No polyp
Total
Polyp
27
9
36
No polyp
23
50
73
Total
50
59
109
(b)
Statistical parameter
Value
95% confidence interval
Correct classification
70.6%
62.1%–79.2%
Misclassification
29.4%
20.8%–37.9%
Sensitivity
54.0%
40.4%–67.0%
Specificity
84.7%
73.2%–91.9%
False positive rate
15.3%
6.4%–24.1%
False negative rate
46.0%
32.7%–59.3%
Prevalence
45.9%
36.5%–55.2%
Positive predictive value (PPV)
75.0%
60.9%–89.1%
Negative predictive value (NPV)
68.5%
57.8%–79.1%
Positive likelihood ratio (LR+)
3.54
1.84–6.81
Negative likelihood ratio (LR−)
0.54
0.39–0.75
Data in contingency table are numbers of patients.