Skip to main content

Table 2 The performances of PCR-RDB genotyping cotesting and Cervista® cotesting for identifying CIN3+. (N = 24,819)

From: Cost-effectiveness and accuracy of cervical cancer screening with a high-risk HPV genotyping assay vs a nongenotyping assay in China: an observational cohort study

 

PCR-RDB cotesting

Cervista® cotesting

P-value

Arm 1 (n = 3272)

 Sensitivity

94.9% (87.9–100.0%)

86.5% (75.5–97.5%)

0.020

 Specificity

90.6% (89.6–91.6%)

92.7% (91.8–93.6%)

0.002

 PPV

10.8% (7.9–13.0%)

11.9% (7.3–12.1%)

0.760

 NPV

99.9% (99.8–100.0%)

99.7% (99.6–99.9%)

0.046

 PLR

10.2 (8.8–11.5)

12.0 (9.9–14.2)

/

 NLR

0.06 (0.01–0.22)

0.15 (0.06–0.33)

/

 No. of cases identified at first round screening

37

32

/

 No. of cases identified at follow-up round

2

5

/

 No. of colposcopies to identified 1 case at first round

9.1

8.4

/

 Cost per each identified CIN3+ women per round

$ 4860 (Â¥ 34,020)

$ 5122 (Â¥ 35,854)

/

Arm 2 (n = 11,638) vs. Arm 3 (n = 9909)a

 Sensitivity

95.1% (92.5–97.7)

80.9% (75.5–86.3)

< 0.001

 Specificity

92.2% (91.7–92.7)

95.0% (94.6–95.4)

< 0.001

 PPV

22.1% (19.6–24.5)

25.4% (22.0–28.7)

0.121

 NPV

99.9% (99.8–99.9)

99.6% (99.5–99.7)

< 0.001

 PLR

12.4 (11.3–13.0)

16.5 (14.3–18.1)

/

 NLR

0.05 (0.03–0.09)

0.20 (0.15–0.27)

/

 No. of cases identified at first round screening

252

165

/

 No. of cases identified at follow-up round

21

43

/

 No. of colposcopies to identified 1 case at first round

4.5

3.9

/

 Cost per each identified CIN3+ women per round

$ 2430 (Â¥ 17,010)

$ 2711 (Â¥ 18,977)

/

  1. CIN3+, cervical intraepithelial neoplasia grade 3 or worse; PPV, positive predictive value; NPV, negative predictive value; PLR, positive likelihood ratio; NLR, negative likelihood ratio
  2. a Compare Arm 2′s screening strategy with Arm 3′s screening strategy