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Table 3 Univariate Analysis of potential factors affecting ALOS for COPD^ treatment

From: Risk factors of hospitalization and readmission of patients with COPD in Hong Kong population: Analysis of hospital admission records

  Univariate Analysis
(ANOVA)
  ALOS
Mean(d) ± SD
P
Age γ = 0.01 0.002
Gender   
   Male 4.32 ± 7.40 < 0.001
   Female 4.74 ± 7.93  
Public assistance*   
   Yes 4.58 ± 7.68 < 0.001
   No 4.28 ± 7.41  
Living in nursing home   
   Yes 4.96 ± 7.59 < 0.001
   No 4.28 ± 7.51  
Unplanned readmission   
   Yes 4.71 ± 6.85 < 0.001
   No 4.32 ± 7.73  
Charlson comorbidity index γ = 0.03 < 0.001
  1. ^ COPD: ICD-9-CM Diagnosis Code: 490-492, 494-496
  2. *Public assistance: Patients eligible for complete or partial medical fee waiver
  3. γ = Pearson correlation