Figure 1.

Concordance between test results for the 2 types of rapid diagnostic tests (RDTs) in Artibonite and Grand Anse easy-access group surveys and the dose-response relationship between histidine-rich protein 2 (HRP2) antigen concentration and RDT result. Panels are shown for the Artibonite and Grand Anse study sites for the conventional and high-sensitivity RDTs (cRDT/hsRDT, respectively). Two-by-two tables for the 2 RDTs comparing test concordance for all persons enrolled in the Artibonite (A) and Grand Anse (B) surveys with Cohen κ agreement. *McNemar test to indicate statistical significance of discordant test results between the 2 RDTs was modified to adjust for low numbers of discordant results as described in the Methods. Logistic and locally estimated scatterplot smoothing regression of probability of RDT positivity by antigen concentration in study participants for Artibonite (C) and Grand Anse (D) surveys. Outputs for the logistic regression are shown in Table 1.