1 “... of blinding of outcome assessors of arrhythmia outcomes or SCD, high attrition rates (>20%), or differential...”

2 “... that reported assessing verification bias (P for trend < 0.001), spectrum bias (P for trend = 0.007), blinding...”

3 “... that reported assessing verification bias (P for trend < 0.001), spectrum bias (P for trend = 0.007), blinding...”

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