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Table 2 Risk-adjusted RBC transfusion in major surgery as a function of race

From: Racial disparities in the use of blood transfusion in major surgery

Major surgery

Unadjusted

Baselinea

Within Hospitalsb

 

OR (95% CI)

P value

AOR (95% CI)

P value

AOR (95% CI)

P value

CABG

      

Whites

(Reference)

 

(Reference)

 

(Reference)

 

Blacks

1.75 (1.42-2.17)

<0.001

1.41 (1.13-1.76)

0.002

1.42 (1.30-1.56)

<0.001

THR

      

Whites

(Reference)

 

(Reference)

 

(Reference)

 

Blacks

1.30 (1.11-1.51)

0.001

1.39 (1.20-1.62)

<0.001

1.43 (1.29-1.58)

<0.001

Colectomy

      

Whites

(Reference)

 

(Reference)

 

(Reference)

 

Blacks

1.20 (0.997-1.44)

0.053

1.08 (0.90-1.30)

0.40

1.01 (0.85-1.19)

0.92

  1. OR: odds ratio, AOR: adjusted odds ratio, CI: confidence interval, CABG: coronary artery bypass surgery, THR: total hip replacement.
  2. aIndicates patient level risk adjustment model (age, gender, admission status, APR-DRG severity of illness, and AHRQ comorbidities).
  3. bIndicates within-hospital risk adjustment model using hospital fixed effects model (all patient risk factors above plus hospital fixed effects).