Table 3.

Multiple linear regression model estimates, 95% CI and p values for the predictive value of blood loss formulae calculations on length of stay and incidence of transfusion.

	Length of stay			Transfusion
	Estimate	95% CI	p value	Estimate	95% CI	p value
Liu	−0.0009	−0.003 to 0.001	0.318	0.0002	0.0001 to 0.0002	<0.0001
Mercuriali	0.0006	−0.001 to 0.002	0.432	0.0003	0.0002 to 0.0003	<0.0001
Bourke	0.0003	0.0002 to 0.0005	0.0002	0.000007	−0.000001 to 0.00001	0.099
Ward	0.00001	−0.004 to 0.004	0.994	N/A	N/A	N/A
Gross	−0.0016	−0.0040 to 0.0006	0.152	−0.00001	−0.0001 to 0.0001	0.840
Lisander	0.0008	−0.0005 to 0.002	0.235	0.0003	0.0003 to 0.0004	<0.0001
Meunier	0.0019	−0.0009 to 0.0046	0.180	0.0003	0.0001 to 0.0004	<0.0001