Table 2.
Hazard ratios (95% confidence intervals) corresponding to the adjusted Cox interaction model for conventional serology in treated children or adolescents (1–19 years) versus adults (>19 years) with chronic Trypanosoma cruzi infection.
| Serological test | HR (95% CI) |
p-valuea | |
|---|---|---|---|
| Brazil | Argentina, Bolivia, Chile, and Paraguay | ||
| ELISA | 6.60 (2.03–2.42) | 1.71 (0.77–3.81) | 0.062 |
| IIF | 9.37 (3.44–25.50) | 1.54 (0.64–3.71) | 0.007 |
| IHA | 5.55 (1.46–21.11) | 1.09 (0.44–2.70) | 0.047 |
CI, confidence interval; ELISA, enzyme-linked immunosorbent assay; IIF, indirect immunofluorescence assay; IHA, indirect hemagglutination assay; HR, hazard ratio.
a
The p-value corresponds to the effect of the interaction obtained from the adjusted Cox proportional hazards model.