Beta Coefficient * (95% CI) p-Value Hospitalization Duration in Days Arrhythmia 8.02 (2.28; 13.8) 0.006 Cardiovascular disease 3.11 (−2.65; 8.88) 0.288 Age 0.17 (0.04; 0.30) 0.011 Odds Ratio * (95% CI) p-Value Admission to ICU/IMC Arrhythmia 1.90 (0.83; 4.38) 0.127 Cardiovascular disease 1.20 (0.50; 2.85) 0.673 Age 1.02 (0.99; 1.04) 0.161 Mechanical ventilation Arrhythmia 6.05 (2.46; 15.3) <0.001 Cardiovascular disease 1.84 (0.67; 4.80) 0.222 Age 1.00 (0.97; 1.02) 0.716 Death Arrhythmia 1.45 (0.49; 4.01) 0.483 Cardiovascular disease 3.96 (1.45; 10.7) 0.007 Age 1.03 (1.00; 1.07) 0.066