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Relationship between fragmented QRS and intraventricular systolic dyssynchrony.
| Group | Significant systolic dyssynchrony present (n) | No significant systolic dyssynchrony (n) | Total (n) |
|---|---|---|---|
| Fragmented QRS | 39 (true positives) | 11 (false positives) | 50 |
| Normal QRS | 7 (false negatives) | 43 (true negatives) | 50 |
| Total | 46 | 54 | 100 |
