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

Table 5. Linear regression analysis for blood transfusion/weight.

Blood transfusion/weight Simple linear regression Multiple linear regression
B p value 95% CI B p value 95% CI
BMI group                
 BMI <24 kg/m2 1.451 <0.001 0.663 2.239 1.033 0.018 0.174 1.893
 24 ≤BMI <28 kg/m2 0.312 0.406 −0.425 1.048 0.061 0.879 -0.719 0.839
 BMI ≥28 kg/m2*                
Age 0.055 <0.001 0.025 0.085        
Diabetes mellitus 0.387 0.198 −0.202 0.977        
Hyperlipidemia 0.690 0.014 0.137 1.242        
Hypertension 0.503 0.083 -0.066 1.071        
Atrial fibrillation −1.799 0.003 −2.991 −0.607 −1.429 −0.026 −2.689 −0.169
Glucose 0.001 <0.001 <0.001 0.001        
RBC −0.930 0.001 −1.474 −0.385        
Hb −0.026 0.003 −0.044 −0.009        
PLT −0.005 0.036 −0.009 <0.001        
Hematocrit −0.058 0.040 −0.114 −0.003        

*BMI ≥28 kg/m2 as the control group; R2 = 0.105. RBC: red blood cell; Hb: hemoglobin; PLT: platelet; BMI: body mass index; CI: confidence interval