Table 4.

Linear regression analysis of risk factors for longer hospital stay duration.

Variable	Univariate Analysis		Multivariate Analysis
	Standardized β	p	Standardized β	p
Age	0.15	<0.01	0.08	0.07
Heart disease *	0.06	0.17	0.01	0.78
COPD	−0.01	0.76	−0.03	0.51
Abnormal ECG	0.11	0.02	0.07	0.11
Time from admission to Holter	0.34	<0.01	0.33	<0.01

* Including patients with structural heart disease and/or heart failure.