Skip to main content

Table 2 Different ratios of IgG/IgM for the diagnosis of secondary dengue fever

From: Differentiating secondary from primary dengue using IgG to IgM ratio in early dengue: an observational hospital based clinico-serological study from North India

IgG/ IgM ratio

Sensitivity

Specificity

Accuracy

LR+

LR-

2.0

86.8

100%

57.9

0.132

1.5

94%

100%

63.2

0.06

1.4

94.7

100.0%

63.2

0.053

1.3

94.7

100.0%

63.2

0.053

1.2

97.4%

97.4%

65.8

37.4

0.026

1.15

100%

97.4%

67.5

+ 38.46

0

1.10a

100%

97.4%

67.5

+ 38.46

0

0.9

100%

65.8%

78.1%

2.9

0

  1. This table shows the sensitivity, specificity, accuracy, LR+ and LR- calculated for different ratios of IgG/IgM for the diagnosis of secondary dengue fever
  2. Abbreviations: LR+ positive likelihood ratio, LR- negative likelihood ratio
  3. aMost useful value to diagnose secondary dengue. 1.10 is chosen as the most accurate ratio of IgG/IgM to diagnose based on all the variables used here
  4. ∞ value cannot be ascertained