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 |