Table 3. Comparison of the slope and area measures in the frequency-following response between children with congenital infection with the Zika virus, with and without microcephaly, and children with no evidence of exposure.
| Groups | Mean and SD | L CI | H CI | p - value | |
|---|---|---|---|---|---|
| Slope (µV/ms) | Microcephalic Normocephalic Not exposed |
0.27 ± 0.36 0.22 ± 0.11 0.12 ± 0.08 |
0.04 0.06 0.03 |
1.25 0.40 0.27 |
0.318 b |
| Area (µV x ms) | Microcephalic Normocephalic Not exposed |
1.47 ± 1.47 0.71 ± 0.69 0.87 ± 1.05 |
0.56 0.28 0.22 |
2.38 1.14 1.52 |
0.263 a |
Abbreviations: HCI, higher confidence interval; LCI, lower confidence interval; SD, standard deviation.
a
Kruskal-Wallis test.
b
one-way ANOVA test.