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Search Strategy for NIH Funding Support

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This strategy was developed by the National Library of Medicine (NLM) to retrieve those citations indicating financial support by the National Institute of Health.

In 1981, NLM began to carry the actual grant number for PHS grants, just as it appears in the original article, in the MEDLINE® citation. No attempt is made to standardize the format of the grant numbers, except for the prefix portion where the correct format contains the number '0' (zero) and not the letter 'O', e.g.: R01 and not RO1. A computer algorithm scans the grant number to isolate the 2-letter grant code and then adds the agency/institute acronym to the citation. The data are only as dependable as the original source and some mislabeling of the supporting institution may occur as a result of the machine parsing, but the numbers are a good indication of the literature acknowledging research support that is being indexed for MEDLINE.

Strategy last modified July 3, 2014.

NIH[gr] OR Research Support, N.I.H., Extramural[pt] OR Research Support, N.I.H., Intramural[pt]

Last Reviewed: February 13, 2018