Table 1.

Baseline Characteristics of Participants

Patients, n	506
No. of CTG repeats	830 (499–1331)
Age, y	40 (32–49)
Female sex, % Male sex, %	50.8 49.2
Bed rest, %	2.4
Nutrition support, %	3.8
Oxygen administration, %	3.6
Tracheotomy, %	3.4
Arrhythmia, %
AF	2.3
VT	0.2
Pacemaker Implantation, %	0.6
ECG
Heart rate, bpm	70.1 (60.3–79.5)
Prolonged PQ interval, %	11.8
Wide QRS duration, %	20.3
Prolonged QTc interval, %	33.0

Values are expressed as the median (Q1–Q3) for continuous variables and % for categorical variables. AF indicates atrial fibrillation; and VT, ventricular fibrillation.