Multilinear regression between selected predictor variable and total length of hospital stay.

Table 6: Multilinear regression between selected predictor variable and total length of hospital stay.

	Unstandardized Beta	Standardized Beta	P value	95.0% CI for Beta
				Lower	Upper
(Constant)	1.631		< 0.001	1.288	1.974
Private Hospital	-0.125	-0.149	0.006	-0.213	-0.036
ICU admission	0.266	0.153	0.01	0.065	0.468
Sepsis	0.103	0.058	0.238	-0.068	0.273
Central venous catheter	0.393	0.205	0.001	0.167	0.619
Nosocomial infection	0.305	0.182	< 0.001	0.143	0.468
Poly-microbial infection^*	0.332	0.163	0.001	0.134	0.531
Cerebrovascular accident	0.137	0.034	0.435	-0.208	0.483
Pneumonia infection	0.22	0.104	0.018	0.038	0.403
S. aureus MDR	0.338	0.111	0.014	0.068	0.068
P. aeruginosa MDR	0.123	0.028	0.523	-0.255	0.5
*K. pneumoniae MDR*	0.467	0.107	0.015	0.091	0.842
S. maltophilia	-0.037	-0.005	0.909	-0.664	0.59

^*Polymicrobial infection: Involvement of ≥ 2 bacteria.

Standardized Beta was used to compare the effect of variable on the length of hospital stay; Unstandardized Beta was used in the estimation of the length of hospital stay through the model's formula. Hospital 1 (public) was coded as 1; and hospital 2 (private) was coded as 2 on the SPSS.

CI: confidence Interval; ICU: Intensive Care Unit; MDR: Multi-Drug Resistant; S. aureus: Staphylococcus aureus; P. aeruginosa: Pseudomonas aeruginosa; K. pneumoniae: Klebsiella pneumoniae; S. maltophilia: Stenotrophomonas maltophilia.