Table 2 Univariate and multivariate logistic analysis of risk factors for blood transfusion after hip fracture surgery

Age (year)

1.07 (1.044-1.09)

< 0.01*

1.03 (1.01-1.06)

0.02*

Sex

 Female

Ref.

Ref.

 Male

0.53 (0.33-0.84)

0.01*

1.08 (0.56-2.10)

0.82

BMI (kg/m²)

0.90 (0.84-0.96)

< 0.01*

0.92 (0.85-1.01)

0.06

Hb (g/L)

0.92 (0.90-0.93)

0.01*

0.92 (0.90-0.94)

< 0.01*

TXA

 No

2.28 (1.45-3.57)

< 0.01*

1.92 (1.11-3.34)

0.02*

 Yes

Ref.

Ref.

Type of anesthesia

 GA

1.28 (0.84-1.96)

0.25

2.08 (1.21-3.57)

< 0.01*

 CSEA

Ref.

Ref.

Waiting time (d)

1.11 (1.01-1.21)

0.04*

0.93 (0.82-1.04)

0.19

Hypertension

 No

Ref.

Ref.

 Yes

1.33 (0.86-2.05)

0.19

1.14 (0.66-1.96)

0.65

Diabetes

 No

Ref.

Ref.

 Yes

1.79 (1.07-2.97)

0.03*

1.55 (0.83-2.92)

0.17

Smoking

 No

Ref.

Ref.

 Yes

0.49 (0.26-0.92)

0.03*

0.55 (0.22-1.41)

0.22

Alcohol

 No

Ref.

Ref.

 Yes

0.60 (0.33-1.08)

0.09

1.10 (0.45-2.73)

0.83

Surgical approach

 HA

Ref.

Ref.

 IF

0.92 (0.56-1.52)

0.75

1.62 (0.45-5.78)

0.46

Type of fracture

 FNF

Ref.

Ref.

 ITF

0.62 (0.38-1.02)

0.06

0.51 (0.14-1.85)

0.30