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Table 2 Analysis of potential factors affecting unplanned COPD^ patient readmission episodes

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

  Univariate Analysis   Multivariate Analysis (Logistic Regression)
  Unplanned Readmission   Unplanned Readmission
  Yes (n = 15882)
Mean ± SD
No (n = 49615)
Mean ± SD
P OR(95% CI) P
Age (yrs) 76.74 ± 9.34 76.83 ± 9.67 0.020 1.00(0.996-1.000) 0.049
Gender      
   Male 12889 (81.2) 37567 (75.7) < 0.001 1.45 (1.38-1.52) < 0.001
   Female 2993 (18.8) 12048 (24.3)   1.00 (reference)  
Public assistance*      
   Yes 8235 (51.9) 20458 (41.2) < 0.001 1.41(1.36-1.46) < 0.001
   No 7647 (48.1) 29157 (58.8)   1.00 (reference)  
Living in nursing home      
   Yes 3820 (24.1) 8756 (17.6) < 0.001 1.41 (1.34-1.47) < 0.001
   No 12062 (75.9) 40859 (82.4)   1.00 (reference)  
Charlson comorbidity index 1.20 ± 0.82 1.21 ± 0.72 0.053 0.99(0.96-1.01) 0.233
  1. ^ COPD: ICD-9-CM Diagnosis Code: 490-492, 494-496
  2. *Public assistance: Patients eligible for complete or partial medical fee waiver