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Table 4 Results for sample 1: P.falciparum, parasite density 177.000/μl or "++++". Valid answers of 174 participants were included

From: External quality assessment of malaria microscopy in the Democratic Republic of the Congo

Reported result No parasites observed Parasite density ("plus system") Total
Not reported + ++ +++ ++++ n (%)
P. falciparum   1 5 9 27** 103* 145 (83.3%)
P. falciparum and P. malariae       1** 1 (0.6%)
P. malariae   1    1 2 4 (2.3%)
No species identification reported     1 3 11 15 (8.6%)
No parasites observed 9       9 (5.2%)
Total 9 2 5 10 31 116 174 (100%)
  1. *Correct result, including one result reported as "+++++"
  2. **Minor error