TABLE 5.

Univariate and multivariate analyses of risk factors potentially associated with arrhythmia.

	Univariate analysis			Multivariate analysis
	OR	CI	p-value	OR	CI	p-value
Age	1.13	1.1–1.2	<0.0001	1.14	1.07–1.22	0.0004
Chronic kidney disease	3.13	1.25–7.89	0.02	0.22	0.02–2.11	0.83
COPD	3.19	1.42–7.15	0.005	1.50	0.43–5.26	0.99
Rare diseases	7.23	0.83–63.15	0.07	–	–	–
Arterial hypertension	2.21	1.21–3.99	0.009	1.09	0.42–2.81	0.29
Coronary artery disease	6.17	2.49–15.32	<0.0001	12.7	2.38–68.01	0.005
Heart failure	21.4	2.73–168.4	0.004	3.34	0.10–112.1	0.54
Any prior arrhythmia	0.86	0.31–2.40	0.77	–	–	–
Number of comorbidities	1.50	1.24–1.82	0.02	0.67	0.35–1.28	0.22
Sodium	1.00	0.97–1.03	0.98	–	–	–
Magnesium	0.20	0.04–0.94	0.04	0.86	0.01–64.04	0.95
Creatinine	1.54	0.87–2.73	0.14	–	–	–
Glomerular filtration rate	0.97	0.96–0.98	<0.0001	1.03	0.99–1.06	0.55
B-type natriuretic peptide	1.003	1.00–1.006	0.02	–	–	–
Troponin	1.07	1.03–1.12	0.0004	1.05	1.003–1.10	0.04
C-reactive protein	1.05	1.01–1.09	0.02	1.025	0.98–1.07	0.98
Ferritin	1.00	1.00–1.00	0.16	–	–	–
D-dimer	1.00	1.00–1.00	0.03	–	–	–
Procalcitonin	2.63	1.22–5.69	0.01	1.310	0.84–2.03	0.30
Hemoglobin	0.82	0.71–0.95	0.009	0.89	0.64–1.21	0.77
LMWH	0.57	0.18–1.76	0.97	–	–	–
QTc dispersion	1.02	1.008–1.04	0.001	1.02	0.99–1.04	0.08

COPD, chronic obstructive pulmonary disease; LMWH, low-molecular-weight heparin; QTc, heart rate-corrected QT interval.