Table 4.

Performance characteristics of incidence USS screening for detection of ovarian and tubal cancers (WHO 2014 classification) within one year of screen.

Characteristics	No/% (95% CI)
Number of women screen years	280,534
Number of surgeries	960
Ovarian and Tubal Malignancies
Screen positives	113
Screen negatives	52
Sensitivity	68.5% (60.8, 75.5)
Specificity	99.7%(99.7, 99.7)
Positive predictive value	11.8%(9.8, 14.0)
No. of operations per screen positive	8.5
Invasive Epithelial Ovarian and Tubal Malignancies *
Screen positives	80
Screen negatives	50
Sensitivity	61.5% (52.6, 69.9)
Specificity	99.7% (99.7, 99.7)
Positive predictive value	8.3% (6.7, 10.3)
No. of operations per screen positive	12.0

Data are numbers or % (95% CI) * excludes non epithelial and borderline epithelial ovarian neoplasms).