Table 2.

Analysis of the risk factors affecting hidden blood loss

Affecting Factors	Unstandardized Coefficients	Standard Error	Standardized Coefficients	t	P
Gender	0.029	0.021	0.027	1.380	0.170
Age	0.044	0.015	0.058	1.958	0.034
Time of the operation	−0.476	0.501	- 0.059	−0.951	0.344
Fracture type	1.794	0.194	0. 427	9.242	0.000
Anaesthesia	0.633	0.024	0. 493	25.938	0.000
Hypertension	0.002	0.220	0.000	0.010	0.992
Diabetes	0.023	0.055	0.014	0.427	0.670
Bone mineral density	−0.622	0.032	−0.482	−19.537	0.000
Use of anticoagulants	−0.014	0.004	−0.059	−3.212	0.002
BMI	0.001	0.010	0.002	0.099	0.922