Studies comparing different QT variability groups
| 1st marker | 2nd marker | Difference | No difference | Total |
|---|---|---|---|---|
| Non-consecutive QT | Consecutive QT | 1 | 6 | 7 |
| Non-consecutive QT | Non-consecutive QTn | 19 | 32 | 51 |
| Non-consecutive QT | Consecutive QTn | – | 2 | 2 |
| Consecutive QT | Non-consecutive QTn | 2 | 1 | 3 |
| Consecutive QT | Consecutive QTn | – | 2 | 2 |
| Non-consecutive QTn | Consecutive QTn | – | – | 0 |
All possible combinations of comparison are shown in columns 1 and 2. The third column shows in how many studies there is a difference in association of the markers with the outcome. The fourth column shows how many studies show no difference.
QTn, QT variability normalised.