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Table 4 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

  Negative Binomial Regression Model
  ß Standard Error P
Age 0.0023 0.0024 0.3248
Gender    
   Female 0.3803 0.0554 < 0.001
   Male 0 (reference)   
Public assistance*    
   Yes 0.1692 0.0464 0.0003
   No 0 (reference)   
Living in nursing home    
   Yes 0.5430 0.0652 < 0.001
   No 0 (reference)   
Unplanned readmission    
   Yes 0.3891 0.0533 < 0.001
   No 0 (reference)   
Charlson comorbidity index 0.3171 0.0405 < 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