The Average Survey Score is the average score of those surveys that results have been returned for, over a three year period. Partial participation, where only some cases in a survey have been submitted, is included in the scoring, while full survey non‐participation is excluded.
Over the 3 year period, participants who obtain a majority of concordant assessments will rank higher than those with a greater proportion of minor discordance and discordant assessments.
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The Role of External Quality Assurance in Identifying Poor Laboratory Performance(PDF 518 KB)