Comparison of clinical characteristics of patients having or having not having undergone a pacemaker upgrade
| PM upgrade (n=10) | No PM upgrade (n=27) | Statistical significance | |
| Males | 7 (70%) | 11 (40.7%) | ns (males vs females) |
| Ser143Pro | 0 (0%) | 13 (76.5%) | p=0.007 |
| Transplantation | 1 (10%) | 6 (22.2%) | ns |
| Afib or flutter | 9 (90%) | 21 (77.8%) | ns |
| DCM by the end of follow-up | 7 (70%) | 12 (44.4%) | ns |
| Ventricular arrhythmia requiring treatment | 4 (40%) | 6 (22.2%) | ns |
Afib, atrial fibrillation; DCM, dilated cardiomyopathy; PM, pacemaker.