Epidemiological and clinical characteristics of older adults with burns: a 15-year retrospective analysis of 2554 cases in Wuhan Institute of Burns

Table 4 Multivariate linear regression analysis of factors influencing hospital cost

	B	S.E	Beta	95% CI		t	P value
	B	S.E	Beta	Lower	Upper	t	P value
TBSA	2709.457	116.022	0.498	2481.838	2937.077	23.353	< 0.001
Length of stay	867.364	49.131	0.360	770.977	963.751	17.654	< 0.001
Surgery	26,251.054	3185.291	0.166	20,001.968	32,500.141	8.241	< 0.001
Inhalation injury	17,901.488	7577.727	0.048	3035.066	32,767.909	2.362	0.018
Number of Pre-injury diseases	3380.895	1387.340	0.047	659.131	6102.658	2.437	0.015
Etiology	1582.376	713.898	0.044	181.810	2982.943	2.217	0.027

Age,TBSA, length of stay, and number of pre-injury diseases were continuous variables; The categorical variables were included: Gender (male = 1, female = 0); depth of burn (partial-thickness = 0, full-thickness = 1); Etiology (scalds = 0, flame burns = 1, electric flash burns = 2, contact burns with hot objects = 3, chemical burns = 4, medical-related burns = 5, low-thermal-burns = 6, electrical contact burns = 7); Inhalation injury (No = 0, yes = 1); Surgery(No = 0, yes = 1); Shock on admission (No = 0, yes = 1). The value of the adjusted R2 for the regression was 0.742
B Nonstandard coefficients, S.E. Standard error, Beta Standard coefficients, CI Confidence interval

ISSN: 1471-2318