Skip to main content

Table 2 The performance of Giemsa microscopy (GM) in comparison to PCR in the detection of malaria parasites in the study population

From: Identification of the Plasmodium species in clinical samples from children residing in five epidemiological strata of malaria in Cameroon

 

PCR

Positive

Negative

Total

Giemsa microscopy

Positive

242

0

242

Negative

41

1326

1367

Total

283

1326

1609

Sensitivity, % (CI)

85.5 (80.9–89.4)

Specificity, %

100

Positive predictive value (PPV), %

100

Negative predictive value (NPV), % (CI)

97.0 (96.0–97.8)

False positive rate (FPR), % (CI)

0.0 (0.0–2.3)

False negative rate (FNR), % (CI)

14.5 (2.2–40.1)

Agreement between tests, % (CI)

97.5 (96.6–98.2)

  1. Sensitivity = [true positive/(true positive + false negative) × 100]; specificity = [true negative/(true negative + false positive) × 100; PPV = [true positive/(true positive + false positive) × 100]; NPV = [true negative/(true negative + false negative) × 100]; Agreement = [true positive + true negative/N × 100]; FPR = 1 − specificity; FNR = 1 − sensitivity