Table 2.

The relationship between demographic/clinical variables and the cost

Variable	n	Cost of laboratory ($)	Cost of medication ($)	Cost of hospital stay ($)	Total cost ($)
Age (years)
<65	1,193	44.4±52.4	200.4±637.5	293.5±754.9	738.9±1,368
≥65	4,044	46.8±48.8	229.9±1,439.7	334.5±913.8	829.1±1,644.7
P-value		0.004	0.076	<0.001	0.003
Gender
Female	841	58±60.8	175.7±460.7	399.1±1,019.1	922.5±1,597.5
Male	4,396	44.1±46.9	232.2±1,405.4	311±850.5	786.8±1,583
P-value		<0.001	<0.001	<0.001	<0.001
Intensive care stay
Absent	4,396	39.6±40.7	205.2±1,149.6	200.3±494.6	584.9±1,236.8
Present	841	84.1±71	316.6±1,910.5	976.2±1,749.1	1,976.2±2,465.1
P-value		<0.001	<0.001	<0.001	<0.001
Intubation
Absent	4,932	43.1±45.5	205±1,095.3	232.9±477.5	656.1±1,232.6
Present	305	97.5±78	516.6±3,099.8	1,816.1±2,697	3,273.3±3,495.8
P-value		<0.001	<0.001	<0.001	<0.001
Noninvasive mechanical ventilation
Absent	4,831	43.7±47.6	215.8±1,339.7	290.3±888.6	730.7±1,562
Present	406	76.9±61.6	310.3±689	739.5±642.6	1,735.7±1,581
P-value		<0.001	<0.001	<0.001	<0.001