Mortality and survival in myasthenia gravis : a Danish population based study.
Objectives-To study mortality and survival of patients with myasthenia gravis.
Methods-290 patients with myasthenia gravis were studied, including 212 incident cases identified during a comprehensive epidemiological study of myasthenia gravis in western Denmark 1975-89.
Follow up was performed on 31 December 1994.
Survival curves were constructed using the life table method.
Patient data were compared with data from the public Danish population statistics.
Death certificates were provided from the National Registry of Death.
The annual average crude mortality rate was 1.8 per million (range 1.5-2.2).
The myasthenia gravis related mortality rate (myasthenia gravis as underlying or contributory cause) was 1.4 per million (range 1.1-1.8).
The age specific mortality rates were low below 50 years.
After this age the mortality increased with age in both sexes ; after 60 years more rapidly in men than in women.
The overall survival rates three, five, 10, and 20 years from diagnosis were 85%, 81%, 69%, and 63% respectively.
The survival of both sexes was shorter than that of the corresponding Danish population.
Old age at diagnosis, a classification in Osserman-Genkins group IIB or III, and the presence of a thymoma were associated with a less favourable prognosis.
The three, five, 10, and 20 year survival rates of thymectomised patients were 94%, 94%, 86%, and 79% respectively.
The corresponding figures for the non-thymectomised patients were 78%, 71%, 56%, and 51%. (...)
Mots-clés Pascal : Myasthénie, Mortalité, Survie, Danemark, Europe, Thymectomie, Epidémiologie, Pronostic, Traitement, Homme, Système nerveux pathologie, Neuromusculaire pathologie, Chirurgie
Mots-clés Pascal anglais : Myasthenia gravis, Mortality, Survival, Denmark, Europe, Thymectomy, Epidemiology, Prognosis, Treatment, Human, Nervous system diseases, Neuromuscular diseases, Surgery
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 98-0074477
Code Inist : 002B17H. Création : 14/05/1998.