5. How Do QC Rules Work? February 13, 2014


# 3.  How do Q.C. Rules work?  See for yourself!
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How do Q.C. Rules work?  See it live!

FREE Webinar - This Thursday  February 13, 2014   2:30 EST
Enroll in live webinars

We will use a live simulator to model changes in method accuracy and precision - and Q.C. design.
Which chart shows the biggest change?
Is there a positive bias after the shift?
What Q.C. rules would be broken?
How many runs would be reported before the first QC flag?
How many patients would receive lab errors?

Two Q.C. Charts
Calling all Sodiums!  
Verify the effectiveness of your Q.C. practices to detect clinically-significant change.
Send this quick information in the
attached Excel file.   (Create your own 4-digit code.)
The simulator lets us model different types and sized of change.
   See it live with real data!
Recent Measured Mean
Recent Measured SD
Number of points
Mean assigned/fixed on chart
SD assigned/fixed on chart
QC Rule(s)  - Warning
QC Rule(s)  - Reject
Peer Mean - this method cumulative 
Package Insert Target (if peer unavailable) 
E-mail this file to info@awesome-numbers.org 
Do you teach Q.C.?
Please be a panelist.  Show us how you teach rules.
E-mail zoe@awesome-numbers.org
Webinar Focus           Enroll in live webinars
Open Dialogue    How Q.C. Rules Work?


Using Total allowable Error to Qualify Reagents and Calibrators,  AACC Poster 1992


 "Using Total Error to Monitor  Performance, Qualify  Reagents  and Calibrators, and Select QC Protocols - Real World  Examples";  AACC 1993


The great bias study of 1994


QC Statistics ... Confusion or Comprehension?
AACC Poster 1995


Open Dialogue   How do you monitor method accuracy?


A total error graph of individual data points provides rapid, easy, practical assessment of laboratory performance”  IFCC Poster, England 1996


AACC 1998 - Quality Control in Six Simple Steps 

A Different Perspective

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Thanks for caring for quality!         
Please forward this to friends and colleagues.

Zoe Brooks     Feb 5, 2014
Please note.  I am not being critical of any individual person, institution or organization.  I want to express my most sincere respect, admiration and appreciation to  Dr. Westgard and so many others.  This process does not contradict  today's  published  recommended, principles and processes; it just implements them differently. 
Last modified: Tuesday, 4 March 2014, 4:21 PM