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. 2017 Feb 8;23(2):83–90. doi: 10.5761/atcs.oa.16-00219

Table 4. Linear regression analysis for intraoperative fluid input/weight.

Fluid input/weight Simple linear regression Multiple linear regression
B p value 95% CI B p value 95% CI
BMI group                
 BMI <24 kg/m2 4.493 <0.001 3.199 5.787 4.870 <0.001 3.496 6.245
 24≤ BMI <28 kg/m2 1.349 0.029 0.141 2.557 1.755 0.007 0.482 3.028
 BMI ≥28 kg/m2*                
Age 0.073 0.004 0.023 0.124 0.114 <0.001 0.075 0.153
Diabetes mellitus −0.724 0.150 −0.171 0.262        
Hyperlipidemia −0.672 0.155 −1.597 0.254        
Hypertension 0.087 0.857 −0.865 1.040        
Atrial fibrillation 1.068 0.295 −0.934 3.070        
Glucose <0.001 0.808 −0.001 0.001        
RBC −1.342 0.004 −2.242 −0.441        
Hb −0.050 0.001 −0.078 −0.021        
PLT 0.003 0.466 −0.005 0.010        
Hematocrit −0.098 0.039 −0.191 −0.005        

*BMI ≥28 kg/m2 as the control group; R2 = 0.807. RBC: red blood cell; Hb: hemoglobin; PLT: platelet; BMI: body mass index; CI: confidence interval