[Interpretation of numerical laboratory values]. / Interpretation numerischer Laborwerte.
Ther Umsch
; 52(5): 306-10, 1995 May.
Article
de De
| MEDLINE
| ID: mdl-7770814
ABSTRACT
Numerical values for laboratory tests ae usually divided into positive and negative results by a discriminating value. This raises the question of the reliability of the results, i.e. the probability of the presence of the tested disorder, if the result is positive. The present paper shows that this probability depends on the sensitivity and the specificity of the test as well as on the prevalence of the disorder in the population of patients under investigation. The usual reference values for laboratory tests turns out to be highly specific. The predictive value of a test result can be considerably improved by limiting the diagnostic possibilities. Tests with insufficient sensitivity and specificity are not applicable in screening for disorders or diseases.
Recherche sur Google
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Techniques de laboratoire clinique
Type d'étude:
Diagnostic_studies
/
Risk_factors_studies
Limites:
Humans
Langue:
De
Journal:
Ther Umsch
Année:
1995
Type de document:
Article