Skip to main content

Table 5 Sensitivity and specificity of hospital malaria diagnosis based on expert microscopy

From: Health care provider practices in diagnosis and treatment of malaria in rural communities in Kisumu County, Kenya

Expert Microscopy results as standard reference

Hospital laboratory Microscopic inspection of blood smear

Rapid diagnostic test

Presumptive diagnosis

Positive

Negative

Positive

Negative

Positive

Negative

Positive

49

54

45

16

9

26

Negative

23

150

7

58

5

15

Sensitivity % (95%CI)

47.6 (38.2, 57.1)

73.8 (60.7, 83.8)

25.7 (13.1, 43.6)

Specificity % (95% CI)

86.7 (80.8, 91.0)

89.2 (78.5, 95.2)

75.0 (50.6, 90.4)

Positive Predictive Value % (95% CI)

68.1 (56.6, 77.7)

86.5 (76.3, 94.0)

64.3 (35.6, 86.0)

Negative Predictive Value % (95% CI)

73.5 (67.1, 79.1)

78.4 (67.0, 86.8)

36.6 (22.6, 53.1)

Diagnostic Accuracy % (95% CI)

72.1 (66.4, 77.3)

81.7 (71.5, 90.9)

43.6 (28.7, 58.5)

Agreement (Cohen's kappa)

0.37 (0.25, 0.48)

0.63 (0.50, 0.77)

0.006 (0.00, 0.20)