Table 2.
Clinical Characteristics at Last Evaluation of 41 SCD Cases and 123 Controls (No SCD)
| SCD, n = 41 | No SCD, n = 123 | P | |
|---|---|---|---|
| Age, y | 51.9 ± 16 | 53.8 ± 15 | 0.4 |
| Duration of follow‐up, y | 6.6 ± 8.0 | 7.9 ± 5.8 | 0.01 |
| NYHA III/IV | 14 (34) | 7 (6) | < 0.001 |
| Maximum LVWT, mm | 20 ± 5 | 19 ± 4 | 0.09 |
| Left atrial size, mm | 52 ± 12 | 47 ± 8 | 0.01 |
| Atrial fibrillation | 15 (37) | 16 (13) | 0.001 |
| LVOT gradient, mm Hg | 29 ± 35 | 27 ± 30 | 0.8 |
| Left ventricular function | |||
| End‐diastolic diameter, mm | 50 ± 10 | 45 ± 7 | 0.002 |
| Fractional shortening, % | 32 ± 10 | 42 ± 10 | < 0.001 |
| Reduced ejection fraction (<55%) | 18 | 19 | < 0.001 |
| Diastolic dysfunction | 35 | 78 | < 0.02 |
| Septal reduction | |||
| Alcohol septal ablation | 10 (24) | 21 (17) | 0.3 |
| Myectomy | 9 (22) | 20 (16) | 0.4 |
Abbreviations: LVOT, left ventricular outflow tract; LVWT, left ventricular wall thickness; NYHA, New York Heart Association; SCD, sudden cardiac death.
Data are presented as number (percentage) unless stated otherwise.