Accuracy of Pelvic Ultrasound in Diagnosing Adnexal Torsion

Table 4

The observed outcome of sensitivity, specificity, PPV, and NPV.

Signs	Sensitivity	Specificity	PPV	NPV
	(95% CI)	(95% CI)	(95% CI)	(95% CI)
Ovarian edema	0.40; (0.14 - 0.73)	1.00; (0.84 - 1.00)	1.00; (0.40 - 1.00)	0.82; (0.64 - 0.92)
Ovarian enlargement	0.80; (0.44 - 0.96)	0.63; (0.42 - 0.80)	0.44; (0.22 - 0.69)	0.89; (0.65 - 0.98)
Ovarian cyst or mass	0.60; (0.27 - 0.86)	0.59; (0.39 - 0.77)	0.35; (0.15 - 0.61)	0.80; (0.56 - 0.93)
Abnormal ovarian location	0.30; (0.08 - 0.65)	1.00; (0.84 - 1.00)	1.00; (0.40 - 1.00)	0.79; (0.61 - 0.91)
Abnormal ovarian blood flow	0.00; (0.00 - 0.34)	1.00; (0.84 - 1.00)	NA	0.73; (0.56 - 0.86)
Free fluid in the pouch of Douglas	0.20; (0.03 - 0.56)	0.78; (0.57 - 0.91)	0.25; (0.04 - 0.64)	0.72; (0.52 - 0.86)
Presence of fluid around the ovary	0.00; (0.00 - 0.34)	1.00; (0.84 - 1.00)	NA	0.73; (0.56 - 0.86)
Distended fallopian tube	0.00; (0.00 - 0.34)	1.00; (0.84 - 1.00)	NA	0.73; (0.56 - 0.86)
Sites of bleeding within the affected ovary	0.00; (0.00 - 0.34)	1.00; (0.84 - 1.00)	NA	0.73; (0.56 - 0.86)