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Table 4 Performance of the all-inclusive models on each individual day of illness, from Day2 to Day7

From: Methods to discriminate primary from secondary dengue during acute symptomatic infection

 

Performance

Accuracy

Sens.

Spec.

PPV

NPV

Day 2 (56 primary vs 55 secondary dengue)

 Panbio Indirect IgG

0.86

0.91

0.80

0.82

0.90

 In-house capture IgG

0.76

0.87

0.64

0.71

0.84

 In-house capture IgM/IgG ratio

0.80

0.78

0.82

0.81

0.79

Day 3 (102 primary vs 135 secondary dengue)

 Panbio Indirect IgG

0.86

0.86

0.86

0.89

0.82

 In-house capture IgG

0.83

0.81

0.85

0.88

0.77

 In-house capture IgM/IgG ratio

0.80

0.79

0.80

0.84

0.75

Day 4 (102 primary vs 136 secondary dengue)

 Panbio Indirect IgG

0.86

0.86

0.90

0.80

0.85

 In-house capture IgG

0.85

0.89

0.80

0.86

0.85

 In-house capture IgM/IgG ratio

0.82

0.87

0.77

0.83

0.81

Day 5 (101 primary vs 140 secondary dengue)

 Panbio Indirect IgG

0.87

0.94

0.77

0.85

0.90

 In-house capture IgG

0.85

0.94

0.73

0.83

0.89

 In-house capture IgM/IgG ratio

0.86

0.89

0.81

0.87

0.84

Day 6 (98 primary vs 116 secondary dengue)

 Panbio Indirect IgG

0.84

0.93

0.72

0.80

0.90

 In-house capture IgG

0.81

0.94

0.66

0.77

0.90

 In-house capture IgM/IgG ratio

0.85

0.91

0.79

0.83

0.88

Day 7 (82 primary vs 91 secondary dengue)

 Panbio Indirect IgG

0.79

0.74

0.84

0.84

0.74

 In-house capture IgG

0.80

0.93

0.66

0.75

0.90

 In-house capture IgM/IgG ratio

0.83

0.96

0.68

0.77

0.93