Monitor duration, days, median (IQR) | 13.2 (10.5–13.8) |

Mean sinus rate, beats/min, mean±SD | 79±10 |

Participants with at least one symptomatic trigger, n (%) | 47 (92) |

Supraventricular arrhythmias* | |

Supraventricular ectopic burden>1%, n (%) | 1 (2) |

Non-sustained SVT episodes, n (%) | 22 (43) |

Sustained SVT episodes, n (%) | 0 |

Atrial fibrillation or atrial flutter, n (%) | 0 |

Ventricular arrhythmias* | |

Ventricular ectopic burden>1%, n (%) | 1 (2) |

Non-sustained VT episodes, n (%) | 4 (8) |

Sustained VT episodes, n (%) | 0 |

Participant-triggered events (n=558) | |

Ectopy or arrhythmia identified, n (%) | 122 (22) |

Sinus tachycardia, n (%) | 113 (20) |

Sinus rhythm, n (%)† | 323 (58) |

A total of 51 monitors were analysed.

*Statistics refer to the number and proportion of individual participants with the corresponding arrhythmia finding.

†Events without ectopy and a sinus rate<100 beats per minute.

SVT, supraventricular tachycardia; VT, ventricular tachycardia.