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Left atrial size and history of AF.
| Procedure | Normal | Mild | Moderate | Severe | Row totals |
|---|---|---|---|---|---|
| AF | 1 | 1 | 4 | 4 | 10∗ |
| No AF | 18 | 7 | 3 | 1 | 29 |
| Column totals | 19 | 8 | 7 | 5 | 39 |
Left atrial dilatation is greater in patient with history of AF relative to patients with no history of AF. ∗p < 0.05 by chi-squared analysis.
