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The comorbidity of the epilepsies and the impact of mortality in people with epilepsy.

Gaitatzis, A.; (2005) The comorbidity of the epilepsies and the impact of mortality in people with epilepsy. Doctoral thesis , University of London. Green open access

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Abstract

The thesis describes the epidemiology of selected somatic and psychiatric conditions in epilepsy and the health care demands of people with epilepsy, and presents broad estimates of life expectancy in people with epilepsy in the community in comparison to people without epilepsy. A cross-sectional study was conducted extracting data from the General Practice Research Database for the period 1995-1998. Psychiatric disorders occurred twice as often and the risk of groups of most somatic disorders across categories was increased in people with epilepsy. The risk of neoplasia excluding intracranial tumours was not increased in epilepsy. The risk of brain tumours, meningiomas and neurodegenerative disorders was particularly increased. Other conditions occurring more frequently in epilepsy include upper gastrointestinal bleed, cardio- and cerebrovascular disorders, fractures, pneumonia and chronic lung diseases, and diabetes. Analysis of data from the fourth national survey of morbidity in general practice (1991-92) revealed that patients with epilepsy used health services (consultations with a general practitioner, home visits, referrals to secondary care) more often than people without epilepsy, irrespective of age, sex and social class. A higher proportion of patients with epilepsy consulted for neoplasms, haematological and mental health disorders, dementia, stroke and gastrointestinal bleeding. Previous studies have shown that epilepsy carries a risk of premature death. Life expectancy was estimated using data from a cohort of 564 patients with definite epilepsy followed for nearly 15 years (177 deaths) (registered through the National General Practice Study of Epilepsy) by employing a parametric survival model based on the Weibull distribution. Reduction in life expectancy can be up to 2 years for people with a diagnosis of idiopathic/cryptogenic epilepsy and the reduction can be up to 10 years in people with symptomatic epilepsy. Reductions in life expectancy are highest at the time of diagnosis but diminish with time. People with epilepsy can be affected by a number of psychiatric and somatic conditions more frequently than people without the condition. They make a higher use of health services at all levels of care, which may be partly related to the presence of coexisting disorders. It appears that higher mortality rates in epilepsy translate into reductions in life expectancy.

Type: Thesis (Doctoral)
Title: The comorbidity of the epilepsies and the impact of mortality in people with epilepsy.
Identifier: PQ ETD:593577
Open access status: An open access version is available from UCL Discovery
Language: English
Additional information: Thesis digitised by Proquest
UCL classification: UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Clinical and Experimental Epilepsy
URI: http://discovery.ucl.ac.uk/id/eprint/1446242
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