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Original Article

Health control data-base system and subject-specific normal range

Pages 105-132 | Received 20 May 1976, Published online: 12 Jul 2009
 

Abstract

In the new field of health-control medicine, evaluation of laboratory test results in terms of clinical decision-making requires increased accuracy, especially in relation to trend detection. By analysing the consecutively accumulated data from the PL Health Control System, we have demonstrated subject-specific ranges of fluctuation for blood chemistry, blood count, and other examination items, and have also applied an analysis of variance, clarifying the relationship between subject-specific ranges and the population distribution. (We have found a sex and age mesh to be appropriate to certain items.) An on-line real-time feedback application of this aspect gives the preventive-medicine-oriented physician a basis to evaluate current results in terms of deviation from both an individual's range of fluctuation and the established common level.

Dans le nouveau domaine du contrôle médical, l'évaluation des tests de labora-toires demande une précision de plus en plus grande. Cette exigence se justifie d'autant plus que les tests conduisent à une décision clinique ou à un dépistage. Graˇce à l'analyse des données accumulées par le système de contrôle de santé PL, des zones de fluctuation ont été mises en évidence pour la chimie du sang, les comptages sanguins et d'autres paramètres. Une analyse de la variance a permis de clarifier la relation existant entre les variations individuelles et la distribution de la population. Pour certains paramètres, les auteurs ont trouvé une relation entre le sexe et l'aˇge. L'utilisation en temps réel du système sert de base au clinicien orienté vers la médecine préventive. Ce système lui permet d'évaluer les résultats en fonction des fluctuations individuelles et des fluctuations de groupe.

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