Table 5.

Multivariate analysis of risk factors for predicting deep vein thromboses

Characteristics	OR	95% CI		P values
		LL	UL
(Intercept)	0.003	0.000	1.888	0.079
Sex female	0.989	0.876	1.115	0.851
Age	1.005	1.000	1.010	0.036
Surgery left knee	0.985	0.860	1.129	0.830
Surgery right and left knee	0.872	0.677	1.124	0.293
Surgery right hip	1.053	0.904	1.227	0.505
Surgery left hip	1.094	0.948	1.263	0.222
Surgery right and left hip	0.938	0.666	1.320	0.714
Hypertension yes	1.055	0.936	1.188	0.382
Diabetes yes	1.005	0.685	1.475	0.978
Nationality minority	1.009	0.756	1.346	0.953
BMI	1.005	0.993	1.017	0.418
Temperature	1.232	1.037	1.464	0.018
Heart rate	0.994	0.987	1.002	0.124
Respiration rate	0.948	0.898	1.001	0.056
Systolic blood pressure	0.996	0.992	0.999	0.016
Diastolic blood pressure	1.001	0.995	1.007	0.734
Blood type AB	1.207	1.004	1.450	0.046
Blood type B	1.165	1.025	1.325	0.021
Blood type O	1.103	0.971	1.253	0.132
Anesthesia epidural	1.000	0.830	1.204	0.996
Blood loss	1.000	1.000	1.000	0.728
Operation time	1.000	0.999	1.001	0.642
Catheterization yes	0.956	0.452	2.025	0.907
Blood transfusion yes	0.987	0.861	1.130	0.845
Perioperative use of hemostatics yes	1.085	0.973	1.209	0.145
Drainage yes	1.127	1.003	1.265	0.045
Perioperative use of hormones yes	1.091	0.947	1.257	0.230
TT	1.011	0.984	1.040	0.418
APTT	0.995	0.982	1.007	0.386
PT	0.984	0.939	1.031	0.497
DD	0.979	0.955	1.005	0.115
Fibrin	0.986	0.963	1.010	0.251
Hemoglobin	1.000	0.997	1.004	0.841
Platelet count	0.999	0.998	1.000	0.047
ESR	1.001	0.996	1.007	0.582

OR: odds ratio; CI: confident interval; LL: lower limit; UP: upper limit; BMI: body mass index; TT: thrombin time; APTT: active partial thromboplastin time; PT: prothrombin time; ESR: erythrocyte sedimentation rate