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Table 2 Comparison of the Diagnostic Methods for the identification of the enteric protozoa

From: A multiattribute utility evaluation of different methods for the detection of enteric protozoa causing diarrhea in AIDS patients

Organisms

Microscopy

Staining

Fluorescent microscopy

ELISA

 

Direct

After concentration

Saffranin

Acid Fast

Autoflourescence

Calcoflour White

Calcoflour White + DAPI

 

Cryptosporidium spp.

Sensitivity

63.19%

74.23%

83.44%

90.79%

-

-

-

92.02%

Specificity

93.03%

95.82%

98.26%

97.91%

-

-

-

96.12%

PPV

83.74%

90.98%

96.45%

96.1%

-

-

-

97.4%

NPV

81.65%

86.75%

91.26%

94.93%

-

-

-

88.39%

Microsporidia spp.

Sensitivity

-

-

-

-

-

95.19%

97.12%

-

Specificity

-

-

-

-

-

97.69%

98.55%

-

PPV

-

-

-

-

-

92.52%

95.28%

-

NPV

-

-

-

-

-

98.54%

99.13%

-

Cyclospora spp.

Sensitivity

65.22%

78.26%

89.13%

85.87%

97.83%

-

-

-

Specificity

97.21%

98.04%

99.16%

98.6%

100%

-

-

-

PPV

85.71%

91.14%

96.47%

94.05%

100%

-

-

-

NPV

91.58%

94.61%

97.26%

96.45%

99.44%

-

-

-

  1. PPV- Positive predictive value, NPV- Negative predictive value