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.