| |
InterPro takes full advantage of the easy access and navigation of a Web-based
database, with the implementation of a follow-up of a particular test in time,
making use of cumulative scores and other combined statistics. Also, it will
include methods not usually available in the same application, such as the ones
mentioned in ISO 13528, in the NATA and FAPAS protocols, and the Harmonised
Protocol by IUPAC and AOAC International:
 |
Youden Confidence Ellipse Plot;
|
 |
Rank correlation test;
|
 |
Plots for repeatability standard deviations;
|
 |
Tests for the homogeneity of the samples;
|
 |
Use of robust algorithms for establishing of consensus values for concentrations
and standard deviations (based on NATA's criteria and on ISO 13528);
|
 |
Control charts for the follow-up of scores in time;
|
 |
Methods for Split-samples designs;
|
 |
Bar-plots of standardised laboratory biases;
|
 |
Calculation of laboratory bias, percentage differences, ranks, percentage ranks,
Z scores, En numbers, z'-scores, and zeta-scores;In case of pre-established
values for the target standard deviation and the assigned value, the consensus
among participants in each round is assessed against those references using
formal statistical tests, as established in ISO 13528;
|
InterPro is the ideal tool for PT providers and coordinators to accomplish
their tasks in a cost-effective manner, optimising the communication between
coordination and participants.
With this system, participants may enter their own data themselves, and after
notifying the coordination they are allowed to see all the outputs (as a
read-only access). After the notification, the coordination may lock the
participant for all future entries for that round, so that it can only see the
results, and not enter more data. For altering data, the coordination must be
involved. While the participant is registered in the input mode for that round,
it will not see any other result apart from its own. While in this mode, it can
alter the results freely (in case there is any error in typing results or other
problems). After changing to observer mode, it will not be able to alter
anything, but will be able of seeing the other participants' results and scores
(with coded identifications. Only the coordinator will be granted access to the
names of participants).
|