Skip to main content

Table 3 Diagnostic characteristics of the Kato Katz technique using a combined gold standard in the general population and HIV-1 seropositive group before and 4 weeks after treatment

From: Sensitivity and specificity of point-of-care circulating Cathodic antigen test before and after praziquantel treatment in diagnosing Schistosoma mansoni infection in adult population co-infected with human immunodeficiency virus-1, North-Western Tanzania

Diagnostic test

Sensitivity

Specificity

Positive predictive value

Negative predictive value

General population

Pre-treatment combined gold standarda

Kato Katz

64.7% (95%CI:59.6–69.5)

100% (95%CI:92.1–100)

100% (95%CI:98.5–100)

25.4% (19.2–32.5)

Post-treatment combined gold standarda

Kato Katz

35.6% (95%CI:24.7–47.7)

100% (95%CI:97.4–100)

100 (95%CI:86.8–100)

74.7% (95%CI:67.9–80.8)

In the HIV-1 seropositive group

Pre-treatment combined gold standarda

Kato Katz

60% (95%CI:38.7–78.9)

100% (95%CI:39.8–100)

100% (95%CI:78.2–100)

28.6% (95%CI:8.4–58.1)

Post-treatment combined gold standarda

Kato Katz

33.3% (95%CI:43–77.7)

100% (95%CI:59–100)

100% (95%CI:15.8–100)

63.6% (95%CI:30.8–89.1)

  1. aInfection-positive by either egg-or-POC-CCA-positivity (assuming 100% specificity of the Kato Katz result)