Table VII.

Multivariable logistic regression for the probability of blood transfusion in the population of total shoulder arthroplasty patients

	OR	95% CI for OR	P value
Age, y	1.134	0.908-1.417	.268
Gender	27.860	0.298-2604.843	.151
Surgery duration, h	0.026	0.001-1.308	.068
EBL, 100 units	7.166	7.039-7.296	.031*
Total drain output, mL	0.974	0.944-1.005	.105
Preoperative Hgb level	0.008	0.000-0.526	.024*

OR, odds ratio; CI, confidence interval; EBL, estimated blood loss; Hgb, hemoglobin.