Table 3.

Comparison of diagnostic performance of CEC assay and CA125 assay for EM

Items	Sensitivity	Specificity	PPV	NPV	LR
EM versus other benign, n (%)
CECs	17/19 (89.5)	14/16 (87.5)	17/19 (89.5)	14/16 (87.5)	7.2
CA125	13/19 (68.4)	14/16 (87.5)	13/15 (86.7)	14/20 (70.0)	5.5
EM versus healthy control, n (%)
CECs	17/19 (89.5)	12/15 (80.0)	17/20 (85.0)	12/14 (85.7)	4.5
CA125	13/19 (68.4)	11/15 (73.3)	13/17 (76.5)	11/17 (64.7)	2.6

CECs: Circulating endometrial cells; EM: Endometriosis; NPV: Negative predicative value; PPV: Positive predicative value; LR: Likelihood ratio.