Table 4. Echocardiographic parameters.
| Parameter | Mild | Moderate | Severe | p value |
| LVEF (%) | 63.4 ±4.2 | 61.9 ±4.5 | 59.7 ±4.8 | 0.03 |
| E/A ratio | 1.42 ±0.2 | 1.34 ±0.2 | 1.20 ±0.3 | 0.01 |
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