Incidence of Venous Thromboembolism: A Community-based Study in Western France
Emmanuel Oger for the EPI-GETBO Study Group*
From the Department of Internal Medicine and Chest Diseases, Hôpital de la Cavale Blanche, Brest, France
The incidence of venous thromboembolism has been studied during
one year in a defined population of 342,000 inhabitants. The overall
incidence (95% confidence interval) of venous thromboembolism was
found to be 1.83 per thousand per year (1.69 to 1.98). The incidences
of deep venous thrombosis and pulmonary embolism were 1.24 per
thousand per year (1.12 to 1.36) and 0.60 per thousand per year (0.52 to
0.69), respectively. The incidence of venous thromboembolism rose
markedly with increasing age for both sexes; over the age of 75, the
annual incidence reached 1 per 100. Sixty three percent of the patients
were at home when venous thromboembolism occurred. Of these,
sixteen percent had been previously hospitalised within three months.
These results raise concerns on identification of medical patients at
high risk and effective prophylaxis.