Introduction   –   KfH Impact Tools   –  What and for whom?   –   Definitions   –   Methods   –   Tools  –   References

• This was a large scale study undertaken in North America.
• The study was originally undertaken in 1992 by Joanne Marshall.
• It became known as the Rochester study and was the first to demonstrate impact of hospital libraries.
• The approach was subsequently adapted and used in a range of other studies.
• In 2013 the study was updated by Joanne Marshall and conducted on a large scale across North America
• The tool and data sets are publicly available: https://nnlm.gov/mar/about/value
• Similar studies have been undertaken in the UK by Christine Urquhart and Alison Brettle

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