|Parameter||Hazard Ratio||95% CI||p Value|
|TRP dichotomized at the upper quartile for the whole population|
|TRP Q4 vs. Q1–3||2.25||1.49–3.39||<0.001|
|QTc ≥500 ms vs. <500 ms||1.73||1.32–2.27||<0.001|
|Male aged ≤13 years||1.60||1.17–2.18||0.003|
|Female aged ≥14 years||1.39||0.981–2.11||0.12|
|Time dependent β-blocker||0.33||0.18–0.59||<0.001|
|TRP dichotomized at the upper quartile for patients with QTc <500 ms|
|TRP Q4 vs. Q1–3||2.11||1.23–3.61||<0.01|
|QTc ≥480 ms vs. <480 ms||0.94||0.62–1.43||0.78|
|Male aged ≤13 years||1.39||0.84–2.28||0.19|
|Female aged ≥14 years||1.86||0.95–3.65||0.07|
|Time dependent β-blocker||0.44||0.21–0.92||0.03|
Abbreviations as in Table 2.
↵⁎ Multivariate analysis was carried out using Cox proportional hazards regression modeling; separate models were developed for each analysis, with adjustments for the covariates in each part.