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Table 2 Univariate and multivariate logistic regression model analyses of positive HBL in this study

From: Development and validation of a nomogram for prediction of the risk of positive hidden blood loss in the perioperative period of single-level thoracolumbar burst fracture

 

Univariate analysis

 

Multivariate analysis

 

OR (95% CI)

P value

OR (95% CI)

P value

Age (year)

4.055 (2.417–6.805)

<0.001

3.056 (1.956–4.965)

0.012

Sex (%)

1.099 (0.663–1.822)

0.715

NA

 

BMI (%)

1.668 (1.021–2.726)

0.041

NA

 

Hypertension (%)

2.242 (1.351–3.721)

0.002

NA

 

Diabetes (%)

2.584 (1.548–4.316)

<0.001

NA

 

History of smoking (%)

2.735 (1.651–4.531)

<0.001

NA

 

History of alcohol (%)

0.848 (0.520–1.383)

0.509

NA

 

Chronic steroid use (%)

1.391 (0.800–2.419)

0.242

NA

 

COPD (%)

2.589 (1.273–5.265)

0.009

NA

 

History of blood transfusion (%)

1.169 (0.611–2.237)

0.637

NA

 

Preoperative VAS

1.444 (0.832–2.506)

0.192

NA

 

Preoperative JOA score

1.096 (0.635–1.893)

0.741

NA

 

Preoperative SF 36

0.665 (0.395–1.119)

0.125

NA

 

Duration from admission to surgery (day)

2.344 (1.418–3.874)

<0.001

1.985 (1.085–2.956)

0.032

Length of surgical incision (cm)

7.352 (4.235–12.761)

<0.001

NA

 

Duration of operation (h)

8.906 (5.078–15.621)

<0.001

4.571 (1.787–11.692)

0.002

P1%

16.369 (8.826–30.356)

<0.001

3.400 (1.302–8.878)

0.012

P2%

0.667 (0.402–1.109)

0.119

NA

 

Level

0.817 (0.498–1.450)

0.952

NA

 

Levels of fusion (%)

1.639 (1.114–2.412)

0.012

NA

 

Intraoperative infusion of crystalloids (ml)

0.569 (0.341–0.949)

0.031

NA

 

Intraoperative infusion of colloids (ml)

0.765 (0.469–1.248)

0.283

NA

 

Autologous blood transfusion (%)

1.019 (0.601–1.730)

0.943

NA

 

Allogeneic blood transfusion (%)

1.771 (1.012–3.097)

0.045

NA

 

Preoperative total cholesterol (mmol/L)

9.384 (5.287–16.655)

<0.001

7.161 (2.523–20.322)

<0.001

Preoperative triglyceride (mmol/L)

5.196 (3.059–8.828)

<0.001

NA

 

Preoperative Hct (%)

1.576 (0.965–2.576)

0.069

NA

 

Preoperative Hb (g/L)

0.713 (0.436–1.167)

0.178

NA

 

Preoperative ALB (g/L)

4.478 (2.519–7.959)

<0.001

NA

 

Preoperative PT (s)

13.872 (7.632–25.214)

0.089

NA

 

Preoperative APTT (s)

0.700 (0.424–1.156)

0.164

NA

 

Preoperative Fib (mg/dL)

0.525 (0.317–0.868)

0.012

0.378 (0.179–0.598)

0.029

  1. Abbreviations: BMI body mass index, COPD chronic obstructive pulmonary disease, JOA Japanese Orthopaedic Association, VAS visual analogue score, SF-36 36-Item Short Form Health Survey, P1% percentages of vertebral height restoration, P2% percentages of vertebral height loss, Hct hematocrit, Hb hemoglobin, ALB albumin, PT prothrombin time, APTT activated partial thromboplastin time, OR odds ratio, CI confidence interval, NA not available