Table 2.

Predictors of Postoperative PRBC transfusion^*

Characteristic	OR	95% CI	P-value
Weight (per kg)	0.67	0.45 to 0.99	0.0451
Initial Postoperative Hct
< 30%	1.00	(referent)
≥ 31%	0.04	0.01 to 0.20	<0.0001

OR = odds ratio, CI = confidence interval.

^*This logistic regression model was generated using Bayesian Model Averaged based on BIC. Hosmer-Lemeshow test with 8 degrees of freedom yielded P-value of 0.9857, signifying excellent model fit. Weight was modeled as a continuous variable and initial postoperative Hct was modeled as a categorical variable. P-value < 0.05 was considered statistically significant.