Guidance

Food and water proficiency testing schemes: scoring systems and statistics

A guide to the scoring systems and statistics used for the PHE proficiency testing (PT) schemes for food and water microbiology.

Document

Food and water PT schemes: scoring systems and statistics

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Details

This guide is designed to help participants understand the scoring systems and statistics used for assessing results reported for the PHE food and water microbiology PT schemes.

PHE proficiency testing is also known as external quality assessment (EQA).

Published 19 July 2014
Last updated 23 January 2018 + show all updates
  1. Updated with recent file 'Food and water PT schemes: scoring systems and statistics'.
  2. Updated food and water PT schemes: scoring systems and statistics.
  3. Updated food and water PT schemes: scoring systems and statistics.
  4. Rules added for shellfish scheme tube combinations.
  5. Food and water PT schemes: scoring systems and statistics document reviewed
  6. First published.