Priority 26 from the Nutritional Screening and Malnutrition PSP

UNCERTAINTY: How accurate and valid are current nutritional screening tools? (JLA PSP Priority 26)
Overall ranking 26
JLA question ID 0085/26
Explanatory note Not available for this PSP
Evidence

Russell CA, Elia M, on behalf of BAPEN and collaborators. Nutrition screening survey in hospitals in the UK , 2007-2011 https://www.bapen.org.uk/pdfs/nsw/bapen-nsw-uk.pdf PowbB, editor2014
Health Research Classification System category Generic health relevance 
Extra information provided by this PSP
Original uncertainty examples Is this the most accurate way of diagnosing malnutrition as weight is not always the defining factor is malnutrition even in undernourishment. ~ What is the validity and accuracy of these tools ~ Is the MUST screening tool fit for purpose? ~ I would like to know which tool is best to use in which circumstance and how prevalent is the use of such tools? ~ Which screening tool is best for different settings/patient group 
Submitted by  3 x healthcare professional, 2 x patient
PSP information
PSP unique ID 0085
PSP name Nutritional Screening and Malnutrition
Total number of uncertainties identified by this PSP. 81  (To see a full list of all uncertainties identified, please see the detailed spreadsheet held on the JLA website)
Date of priority setting workshop 7 June 2019