title: Statistical evaluation of CAP survey results for calcium, potassium, and blood urea nitrogen.
abstract: Throug the use of the statistical technic known as the linear model, a complete analysis has been made of data obtained in the Colleg of American Pathologists Survey of 1975 for calcium, potassium, and blood urea nitrogen (BUN). The analysis allows a separation of laboratories into core and non-core categories. It also allows for determination of the reproducibility of each analytic technic involved in this survey. For Ca and K, the results obtained by each analytic method were compared with the results obtained by the National Bureau of Standards through use of the definitive method. For BUN, the comparison was made with the average of values for all laboratories and all methods.
mesh_terms: D001806:Blood Urea Nitrogen; D002118:Calcium / Q000097:blood*; D005069:Evaluation Studies as Topic; D006077:Government Agencies; D006801:Humans; D007753:Laboratories / Q000592:standards; D013677:Medical Laboratory Science / Q000592:standards*; D010336:Pathology; D011188:Potassium / Q000097:blood*; D011786:Quality Control; D012015:Reference Standards; D012955:Societies, Medical; D013223:Statistics as Topic; D014481:United States
chemical_list: D011188:Potassium; D002118:Calcium