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  1. Validity of cerebrovascular disease mortality statistics in Bulgaria.

    Article - En anglais


    Cerebrovascular disease (CVD) is the leading cause of death in Bulgaria but the increasing mortality could be explained by inaccuracy of the statistical data and so investigation of the validity of CVD mortality statistics is of primary importance.


    The investigation comprised three phases.

    An adequate questionnaire, requiring a reliable decision on the presence/absence of CVD in deceased patients was developed.

    During the first phase the questionnaire was validated on the basis of 325 inpatients aged 20 years and over.

    In the second phase the applicability of the questionnaire was proved and verified in patients who died outside hospital.

    This was performed by using'twin'-copies of each questionnaire, completed in the first phase.

    In the third phase the applicability of the questionnaire for evaluation of CVD mortality statistics was checked using a sample of 119 death certificates.

    Statistical analysis of the information from each of the three phases was intended to evaluate the sensitivity and specificity of the questionnaire and to assess the validity of mortality statistics.


    High sensitivity of the questionnaire was established and it remained at the same value during each of the three phases of the study.

    Specificity was considered lower when the questionnaire was applied for those who died outside hospital and when used by non-neurologists.

    An underestimation of CVD by 8.9% was obtained in the first phase and it amounted to 37. (...)

    Mots-clés Pascal : Cérébrovasculaire pathologie, Mortalité, Taux, Epidémiologie, Méthodologie, Statistique, Evaluation performance, Homme, Bulgarie, Europe, Système nerveux pathologie, Encéphale pathologie, Système nerveux central pathologie

    Mots-clés Pascal anglais : Cerebrovascular disease, Mortality, Rate, Epidemiology, Methodology, Statistics, Performance evaluation, Human, Bulgaria, Europe, Nervous system diseases, Cerebral disorder, Central nervous system disease

    Logo du centre Notice produite par :
    Inist-CNRS - Institut de l'Information Scientifique et Technique

    Cote : 97-0432067

    Code Inist : 002B30A01A1. Création : 19/12/1997.