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Table 3 Predictive models for surgery performed within 48 hours of HF admission (No. 6348)

From: Using clinical variables and drug prescription data to control for confounding in outcome comparisons between hospitals

Risk factor

n (admissions)

Crude OR

Hospital discharge data

Hospital discharge data + clinical variables + drug prescriptions

   

Adjusted OR

P

Adjusted OR

P

Age

-

1.00

1.00

0.420

1.00

0.456

Gender (females vs males)

4925

1.42

1.40

0.000

1.37

0.000

Diabetes

406

0.66

0.72

0.036

0.68

0.011

Obesity (index admission)

41

2.36

2.21

0.016

2.33

0.011

Obesity

23

1.13

1.22

0.705

1.04

0.935

Hypertension

877

0.76

0.80

0.028

  

Osteoporosis

57

2.05

2.13

0.008

1.97

0.017

INR 0.9-1.2

4834

1.00

   

-

INR out of range

855

0.57

  

0.56

0.000

INR missing

659

0.83

  

0.78

0.023

Antiplatelet (3 months)

851

0.78

  

0.79

0.020

Area under ROC curve

  

0.555

0.574

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