Module 5 of 6 · about 59 min · Badge: Trend Spotter
Reading reports and trends
Reading a report, peer groups, trends across rounds and Youden plots.
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What you will learn
4 lessons and a case study
- 1Sign in
Reading a PT report
Read a PT report line by line, confirm the provider scored what you meant to send, and judge each score by how the assigned value and the standard deviation for proficiency assessment were set.
Animated lesson · notes · check · about 12 minFree account - 2Sign in
Peer groups and method bias
Use method, instrument and reagent group statistics to tell a bias your method shares from a problem in your own laboratory, and recognise what group statistics cannot show.
Animated lesson · notes · check · about 11 minFree account - 3Sign in
Trends across rounds
Chart your scores round by round, recognise drift, steps, runs, repeated warnings and widening scatter, and decide when an all-satisfactory history still needs action.
Animated lesson · notes · check · about 12 minFree account - 4Sign in
Youden plots and results at several levels
Read a Youden plot of two samples to separate systematic from one-sample or random error, and use results at several levels to tell constant, proportional and range errors apart.
Animated lesson · notes · check · about 12 minFree account - CSign in
Case: three years of creatinine results
Read eighteen rounds of two-level creatinine scores, method-group statistics and a laboratory log, and separate a reagent's shared bias from a fault in your own laboratory.
Case study · about 8 minFree account