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Table 3 Estimates and standard errors for variables included in the propensity score model

From: High-frequency oscillatory ventilation and short-term outcome in neonates and infants undergoing cardiac surgery: a propensity score analysis

Variable

Coefficient estimate

Standard error

P-v alue

Intercept

-2.87

0.58

< 0.001

The "HFOV index"a

3.94

0.48

< 0.001

Age (days)

0.002

0.002

0.19

Weight (kg)

-0.37

0.12

0.002

Aristotle scoreb

-0.09

0.06

0.10

Surgery with cardiopulmonary bypass

0.87

0.37

0.02

Surgery with deep hypothermic circulatory arrest

-0.97

0.33

0.004

Re-operation

0.59

0.34

0.09

Requirement for a delayed sternal closure

0.81

0.29

0.005

Acute kidney injury requiring renal replacement therapy

0.36

0.62

0.56

Requirement for renal replacement therapy on the day of surgery

1.82

0.63

0.004

  1. The propensity score model included only patients operated from 1 January 2007 through 30 June 2010.
  2. HFOV, high-frequency oscillatory ventilation
  3. acalculated as the prevalence of HFOV from 1 January 2007 through 30 June 2010
  4. baccounting for the surgical complexity