An observational study of an adjusted patient blood management protocol intended to lower rates of transfusion following total knee arthroplasty in patients with preoperative anemia

Table 2 Results

	ACD- (n = 694)	ACD + (n = 58)	p value
BI-7	2.9 (95% CI, 2.9 to 3.0)	2.3 (95% CI, 2.0–2.6)	< 0.001
RBC transfusion between day before surgery and POD 7 ^§	1 (0.1%)	0 (0.0%)	1.00
Hb on POD 7	10.9 (95% CI, 10.8–11.0)	9.9 (95% CI, 9.6–10.1)	< 0.001

Presented as mean (95% confidence interval), except ^§, presented as number of observations (%). Abbreviations: ACD, anemic chronic disease; BI-7, bleeding index determined on postoperative day 7; Hb, hemoglobin; RBC, red blood cells

ISSN: 1749-799X