Age and sex variations in hospital readmissions for COPD associated with overall and cardiac comorbidity.

The international journal of tuberculosis and lung disease : the official journal of the International Union against Tuberculosis and Lung Disease

PubMedID: 19275803

Chen Y, Li Q, Johansen H. Age and sex variations in hospital readmissions for COPD associated with overall and cardiac comorbidity. Int J Tuberc Lung Dis. 2009;13(3):394-9.
OBJECTIVE
To determine sex and age variations in hospital readmissions for chronic obstructive pulmonary disease (COPD) associated with overall and cardiac comorbid conditions.

DESIGN
A one-year follow-up study was conducted for 108 726 COPD in-patients aged >or=40 years who were discharged alive after their first admission in the 1999-2000 fiscal year.

RESULTS
Within a year, 38 955 of the patients were readmitted to hospital for COPD. The incidence rate of COPD readmission was 49.1% per year. It was higher for men than women aged >or=70 years, but was almost the same for patients aged <70 years. The length of hospital stay and the Charlson Index at baseline moderately predicted 1-year COPD readmission in younger age groups and in female patients. Congestive heart failure at baseline was associated with a 20% increase in incidence that was age-related. Pulmonary heart disease was less common but was a significant predictor in almost all age and sex groups. Ischemic heart disease and arrhythmia were moderate predictors, and were only significant in women.

CONCLUSIONS
Women aged <70 years had rates of COPD readmission similar to those of men. Cardiac events were strongly associated with COPD readmissions, which were modified by sex and age.