| Groups | No diastolic dysfunction (No. = 180) | Diastolic dysfunction (No. = 120) | Chi-square test | |||
| No. | % | No. | % | X2 | P-value | |
| A | 115 | 41.1% | 35 | 29.2% | 19.365 | <0.001 |
| B | 65 | 23.2% | 85 | 70.8% | ||