Incidence and aetiology of heart failure; a population-based study

Aims To determine the incidence and aetiology of heart failure in the general population. Methods and Results New cases of heart failure were identified from a population of 151000 served by 82 general practitioners in Hillingdon, West London through surveillance of acute hospital admissions and through a rapid access clinic to which general practitioners referred all new cases of suspected heart failure. On the basis of clinical assessment, electrocardiography, chest radiography and transthoracic echocardiography, a panel of three cardi-ologists decided that 220 patients met the case definition of new heart failure over a 20 month period (crude incidence rate of 1·3 cases per 1000 population per year for those aged 25 years or over). The incidence rate increased from 0·02 cases per 1000 population per year in those aged 25–34 years to 11·6 in those aged 85 years and over. The incidence was higher in males than females (age-adjusted incidence ratio 1·75 [95% confidence interval 1·34–2·29,P