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Table 3 Performance of the Well assay according to the reference results of the InTec assay

From: Evaluation of a new point-of-care oral anti-HCV test for screening of hepatitis C virus infection

Well oral anti-HCV assay

Serum anti-HCV (InTec assay) (n = 1173)

Center 1 (n = 347)

Center 2 (n = 343)

Center 3 (n = 483)

Centers 1–3

Total

Positive

Negative

Positive

Negative

Positive

Negative

Positive

Negative

 

Positive, n

106

4

92

7

240

3

438

14

452

Negative, n

3

234

5

239

13

227

21

700

721

Total

109

238

97

246

253

230

459

714

1173

Positive coincidence rateb (%) (95% CI)

97.25(91.57,99.29)

94.85(87.82,98.09)

94.86(91.17,97.12)

95.42(92.98,97.08)

Negative coincidence rateb (%) (95% CI)

98.32(95.47,99.46)

97.15(93.98,98.75)

98.70(95.92,99.66)

98.04(96.65,98.88)

Consistencyb (%) (95% CI)

97.98(95.81,99.10)

96.50(93.92,98.05)

96.69(94.65,97.99)

97.02(95.87,97.86)

Kappa valueb

0.953

0.914

0.934

0.937

  1. Note: bPositive coincidence rate, negative coincidence rate, consistency and Kappa value were calculated based on serum HCV antibody test result detected using the InTec assay. n Number, 95%CI 95% confidence interval