The only NIH document I have seen that refers to this is an NIH notice
issued in 1997 that limited escalation to 3%:

http://grants2.nih.gov/grants/guide/notice-files/not97-005.html

--
Doris A. Oravec
Program Administrator
Office of Research & Sponsored Programs
Lehigh University
526 Brodhead Avenue 23B
Bethlehem, PA 18015-3046
Phone: 610-758-3023
Fax: 610-758-5994
Email: xxxxxx@lehigh.edu

"That's DAO for short"

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