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Table 1 Characteristics among 65497 COPD^ patient episodes

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

  N = 65497
n (%)
Age (yrs), n = 65496  
   Mean ± SD 76.81 ± 9.59
Gender  
   Male 50456 (77.0)
   Female 15041 (23.0)
Payment*  
   Public assistance 28693 (43.8)
   Others 36804 (56.2)
Living in nursing home  
   Yes 12576 (19.2)
   No 52921 (80.8)
Charlson comorbidity index  
   Mean ± SD 1.21 ± 0.74
Unplanned readmission  
   Yes 15882 (24.2)
   No 49615 (75.8)
ALOS for COPD treatment  
   Mean ± SD 4.41 ± 7.53
Death episode  
   Yes 1958 (3.0)
   No 63523 (97.0)
   missing 16
  1. ^ COPD: ICD-9-CM Diagnosis Code: 490-492, 494-496
  2. *Public assistance: Patients eligible for complete or partial medical fee waiver