Low serum calcium is associated with perioperative blood loss and transfusion rate in elderly patients with hip fracture: a retrospective study

Table 3 Linear regression analysis of factors associated with total blood loss

Variable	R²	P value
Age (years)	0.002	0.237
Sex	0.005	0.076
BMI (Kg/m²)	0.009	0.025
Hypertension	0.001	0.384
Diabetes mellitus	0.002	0.313
Anemia on admission	0.007	0.045
CCI score	0.001	0.662
Time from injury to hospital (h)	0.015	0.003
Hip fracture type	0.044	< 0.001
Blood transfusion	0.031	< 0.001
Serum calcium	0.010	0.016

ISSN: 1471-2474