Table 5.

Multiple linear regression analysis of costs for inpatient rehabilitation.

Variables	Unstandardized coefficients		Standardized coefficients B	t	Significance	B (95.0%CI)		VIF
	Unstandardized coefficients B	SD				Lower limits	Upper limits
Constant	103.714	3.690		28.107	P < 0.001	−8,818.071	−1,037.243
Age	0.077	0.031	0.023	2.492	0.013	47.681	112.856	1.185
LOS	1.280	0.015	0.777	82.657	P < 0.001	626.061	658.970	1.282
Out-of-pocket ratio of costs	−39.290	6.373	−0.052	−6.165	P < 0.001	16,917.466	26,522.962	1.040
Type of diseases (ref: tumors)
Mental and behavioral disorders	−9.236	7.171	−0.012	−1.288	0.198	−11,966.512	3,293.346	1.174
Neurological diseases	2.098	3.318	0.009	0.632	0.527	−2,770.556	4,281.780	3.032
Circulatory system diseases	9.970	2.674	0.074	3.728	P < 0.001	−2,394.836	3,317.513	5.710
Diseases of the skeletal muscle system and connective tissue	−2.668	4.591	−0.010	−0.581	0.561	−5,598.449	4,157.329	4.440
Injury, poisoning, and certain other results of exogenous effects	0.494	3.839	0.001	0.129	0.898	−8,498.907	−321.162	1.915
Factors affecting health status and exposure to health services	4.798	3.498	0.016	1.372	0.170	−4,702.563	2,742.521	2.070
Other diseases	7.382	3.382	0.028	2.183	0.029	405.959	7,553.403	2.436
Nature of the hospital (ref: public hospital)
Private school	9.633	1.936	0.059	4.976	P < 0.001	2,040.646	6,164.528	2.012
Grade of the hospital (ref: primary school)
Secondary school	5.417	3.784	0.024	1.432	0.152	−727.382	7,322.108	4.116
Tertiary hospital	24.435	1.338	0.165	18.264	P < 0.001	10,445.272	13,445.799	1.186