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Table 3 Fine and Gray’s competing-risks analysis

From: Factors influencing liberation from mechanical ventilation in coronavirus disease 2019: multicenter observational study in fifteen Italian ICUs

 

Univariate analysis

Multivariate analysis

Variable

SHR

95% CI

p

SHR

95% CI

p

Age

0.968

0.959–0.978

< 0.001

0.979

0.966–0.992

0.002

Sex (M)

0.716

0.491–1.044

0.083

–

  

BMI

0.999

0.974–1.024

0.922

–

  

SOFA score at ICU admission

0.836

0.788–0.887

< 0.001

0.867

0.792–0.949

0.002

SAPS II score

0.973

0.959–0.987

< 0.001

–

  

Hypertension

0.648

0.498–0.843

0.001

–

  

Chronic ischemic heart disease

0.760

0.473–1.221

0.257

–

  

COPD (oxygen therapy/CPAP)

0.982

0.219–4.407

0.981

–

  

Chronic kidney disease (CKD)

0.692

0.303–1.582

0.383

–

  

CKD –dialisys

0.532

0.061–4.640

0.568

–

  

Diabetes

0.703

0.459–1.078

0.106

–

  

Chronic liver disease (MELD > 10)

0.853

0.224–3.239

0.815

–

  

Renal replacement therapy during ICU stay

0.274

0.142–0.531

< 0.001

0.381

0.220–0.660

0.001

Early onset VAP

0.844

0.600–1.188

0.331

–

  

Late-onset VAP

0.357

0.251–0.510

< 0.001

0.283

0.197–0.407

< 0.001

Lowest PaO2/FiO2 within 5 daysa

1.729

1.312–2.280

< 0.001

1.631

1.316–2.023

< 0.001

CRS < 40 mL/cmH2O within 5 days

0.538

0.350–0.826

0.005

0.488

0.317–0.752

0.001

Cardiovascular complications

0.253

0.175–0.367

< 0.001

0.277

0.181–0.423

< 0.001

Neurologic complications

0.550

0.236–1.283

0.167

0.469

0.207–1.061

0.069

Gastrointestinal complications

0.578

0.374–0.894

0.014

–

  

Extrapulmonary infections

0.533

0.326–0.872

0.012

–

  
  1. Notes: Event of interest—liberation from mechanical ventilation. Competing event- death. Observation time: 28 days
  2. Abbreviations: SHR subhazard ratio, BMI body mass index, SAPS simplified acute physiology score, SOFA Sequential Organ Failure Assessment Score, COPD chronic obstructive pulmonary disease, CKD chronic kidney disease, MELD model for end-stage liver disease, PaO2 arterial oxygen partial pressure, FiO2 inspired fraction of oxygen, CRS respiratory system compliance
  3. aSHR calculated per 100 points increase of PaO2/FiO2 ratio