Corrected QT (QTc) values of the control group and the Rett syndrome cohort together with the clinical stage of Rett syndrome
| Number | Mean QTc (seconds) | Standard error | p Value | |
|---|---|---|---|---|
| Control group | 417 | 0.415 | 0.001 | |
| Rett syndrome cohort | 34 | 0.438 | 0.004 | p < 0.0011-150 |
| Clinical stage | ||||
| II | 4 | 0.410 | 0.042 | |
| III | 26 | 0.441 | 0.027 | |
| IV | 4 | 0.437 | 0.008 | p = 0.7† |
↵1-150 Calculated by analysis of variance for between group difference adjusted for age; †for QTc across clinical stage of Rett syndrome calculated by Kruskal–Wallis test.