Skip to main content

Table 4 Univariable analysis of predictors of prolonged ICU LOS

From: Maxillofacial free flap surgery outcomes in critical care: a single-center investigation looking for clues to improvement

Variables Univariable OR (95% CI) Univariable p-value
Age (years) 1.01 (0.98–1.03) 0.501
Sex 1.77 (0.84–3.78) 0.137
BMI (kg m−2) 1.02 (0.94–1.11) 0.665
 < 18.5 kg m−2 0.69 (0.14–2.78) 0.618
Smoking history 1.37 (0.63–3.03) 0.427
Alcohol 1.63 (0.78–3.46) 0.196
Total reversible CV risk factors 1.10 (0.76–1.59) 0.619
CV disease 1.32 (0.57–3.06) 0.509
COPD 3.41 (1.22–0.50) 0.024
Chronic renal failure 0.38 (0.05–1.64) 0.237
Liver disease 1.96 (0.41–0.32) 0.395
Stroke 1.43 (0.17–2.22) 0.728
Charlson Comorbidity Index 1.08 (0.91–1.30) 0.387
ASA classification  
 II 2.11 (0.63–8.39) 0.248
 III 2.73 (0.69–2.38) 0.166
Surgical indication  
 Primary tumoral resection 0.35 (0.07–1.40) 0.151
 Delayed reconstruction 0.25 (0.04–1.36) 0.121
 Osteoradionecrosis 0.35 (0.07–1.40) 0.151
 Trauma 0.25 (0.01–3.67) 0.327
 Others 0.25 (0.01–3.67) 0.327
Cancer context 0.60 (0.21–1.69) 0.330
Past head and neck radiotherapy 1.15 (0.47–2.73) 0.758
Past head and neck FF failure 3.00 (0.36–1.12) 0.318
Preoperative hemoglobin level (g/dL) 0.87 (0.67–1.09) 0.270
Fibula flap 1.72 (0.82–3.66) 0.152
Ischemia time (min) 1.00 (0.99–1.02) 0.704
Operative time (h) 1.37 (1.10–1.73) 0.006*
Intraoperative IV fluids (mL kg−1 h−1) 0.98 (0.87–1.10) 0.706
Intraoperative blood transfusion 2.26 (1.04–5.11) 0.044
Any complication 4.89 (1.94–4.19) 0.001*
Major complication 3.46 (1.57–7.84) 0.002*
Infectious complication 4.11 (1.90–9.16) < 0.001*
Total pneumopathies 3.78 (1.74–9.18) 0.002*
  1. Categorical variables are presented as n (%) and continuous variables as mean ± SD. Bold values are significant. p-values marked with [*] remain significant after a Benjamini-Hochberg procedure with a false discovery rate of 5%
  2. BMI body mass index, COPD chronic obstructive pulmonary disease, CV cardiovascular, FF free flap, ICU intensive care unit, IV intravenous, LOS length of stay
  3. Delayed reconstructions are flap surgeries that take place time after an initial resection
  4. Reversible cardiovascular risk factors include obesity, hypertension, dyslipidemia, diabetes, and active smoking