Symptoms
According to the univariate analysis, proband status was more frequent
in the symptomatic group (100% vs 75%, p=0.004). Spontaneous type-1
classification was not different between groups (90.9 vs 75%, p =
0.161), but considering only standard leads, spontaneous pattern was
more prevalent in the symptomatic than in the asymptomatic group (54.5%
vs 27.8; p=0.014). The ECG parameters were not different between groups.
Inducibility tended to be more frequent among symptomatic subjects (54.5
vs 28.5; p = 0.094). Invasive and non-invasive parameters are described
in Table 2.
In the multivariate analysis, parameters like VT/FV induction (p=0.173),
male gender (p=0.363) and spontaneous type-1 ECG pattern (p=0.459)
showed no independent predictive value, regardless of symptoms. (Table
3)