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. 2014 Sep 11;8(9):e3139. doi: 10.1371/journal.pntd.0003139

Figure 2. Sensitivity and negative predictive values of one to five Kato-Katzs for S. mansoni diagnosis.

Figure 2

(A) Sensitivity and (B) Negative Predictive Values of one to five Kato-Katzs thick smears (1KK to 5KK) for S. mansoni diagnosis over 11 time-points using six Kato-Katzs as the ‘gold standard’. All individuals were treated with 40 mg/kg praziquantel after the start of the study (pre) and then again at six-months, one-year and two-years. All individuals providing stool samples with >100 eggs per gram (EPG) at one-week-post-praziquantel treatment and any infected children at all other time-points were re-treated with 40 mg/kg praziquantel. 95% confidence intervals are excluded for clarity, but can be seen in Table 2.