| Summary: | In this thesis we will investigate proficiency testing in clinical chemistry. External quality
control agencies utilize proficiency testing programs in order to assess and improve the
analytical performance of clinical laboratories. In particular, we will consider the CHEMPLUS
proficiency testing program which has been developed by the Canadian Reference Laboratory
(C.R.L.) The CHEMPLUS program is designed to assess the validity of clinical tests performed
by a laboratory, that is, the laboratory's analytical performance. Statistically valid and medically
relevant evaluation criteria should be used to assess laboratory performance. However, there
is debate whether this requirement is fulfilled by the use of current evaluation methodology. We
will use data from the CHEMPLUS proficiency testing program to compare several standard
methods of evaluating laboratory performance. In addition, we will construct an overall measure
of laboratory performance that can be used to rank clinical laboratories. === Science, Faculty of === Statistics, Department of === Graduate
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