AbstractObjectiveTo assess changes in the prevalence of diversity language in National Institutes of Health (NIH) grants in 2024-25.DesignRetrospective longitudinal analysis.SettingUnited States.Sample17 701 abstracts of research grants awarded by the NIH between 1 January 2024 and 20 June 2025.Main outcome measuresPrevalence of diversity language in NIH awarded grants measured by month. A within grant analysis compared 2024 and 2025 versions of the same grants, and the net change in the number of words reflecting diversity language versus all words was calculated, using thousands of randomly sampled lists generated from the abstracts to provide control words.ResultsThe rate of words reflecting diversity language decreased sharply between October and November 2024, from 11.11 to 5.42 words

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