Development and validation of a screening tool for early identification of bloodstream infection in older patients – a retrospective case-control study

Table 2 Variables in Final Binary Logistic Regression Equation Bacteremia Screening Tool^a

Independent Variable	OR	95% CI	CART Breakpoint for Association with Bacteremia^b
Maximum Temperature (Tmax, ^oC)	42.575	5.358–338.322	> 37.55
Neutrophils (PMN)	1.923	1.290–2.868	> 7.95
Change in Level of Consciousness (LOC) (Yes)	1.571	0.238–10.370	1
Blood Urea Nitrogen (BUN)	1.359	1.115–1.657	> 10.05
Glucose	1.167	0.714–1.906	> 7.35
Albumin	1.038	0.873–1.235	≤33.5
Alanine Aminotransferase (ALT)	1.005	0.992–1.019	> 19.5

^aLn (odds of BSI) = −150.299 + 3.751(Tmax; ^oC) + 0.654(PMN; ×10⁹/L) + 0.452(∆ LOC; Yes = 1,No = 0) + 0.307(BUN; mmol/L) + 0.154(glucose; mmol/L) + 0.038(albumin; g/L) + 0.005(ALT; U/L)
^bWhen all variables input and parent node is Tmax

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