Table 2 Univariate risk factor analysis in total hip arthroplasty patients for excessive bleeding and transfusions

Age (years)

1.00

0.99–1.07

0.11

1.05

1.01–1.10

0.022

Sex (F)

3.39

1.37–8.38

0.008

7.04

2.19–22.63

0.001

BMI (kg/ m ²⁾

0.83

0.73–0.95

0.006

0.90

0.79–1.03

0.13

Weight (kg)

0.92

0.89–0.96

<0.001

0.94

0.91–0.98

0.003

NSAID (No)

1.42

0.51–3.93

0.50

0.66

0.24–1.83

0.42

ASA (No)

1.17

0.35–3.89

0.80

0.75

0.22–2.57

0.65

SSRI (No)

0.45

0.12–1.73

0.24

0.29

0.08–1.15

0.079

Hemoglobin (g/ L)

0.97

0.94–1.01

0.12

0.87

0.82–0.93

<0.001

Platelet count (10 ⁹ /L)

1.01

1.00–1.01

0.17

1.00

1.00–1.01

0.52

PT (INR)

0.76

0.001–70.9

0.90

0.03

0.00–7.71

0.21

aPTT (s)

1.01

0.90–1.13

0.87

1.05

0.93–1.17

0.45

Operation time (minutes)

1.02

1.00–1.04

0.017

1.02

1.00–1.03

0.065

Anesthesia (spinal)

0.89

0.29–2.75

0.85

0.82

0.24–2.77

0.75

EBL/ kg

n.a.

1.17

1.09–1.26

<0.001