Abbreviating Number - AMA Manual of Style

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Abbreviating Number 

Numbers and Percentages

Stephen J. Lurie

and Margaret A. Winker

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PRINTED FROM AMA MANUAL OF STYLE ONLINE ( © American Medical Association, 2009. All Rights Reserved. Under the terms of the license agreement, an individual user may print out a PDF of a single chapter of a title in AMA Manual of Style Online for personal use (for details see Privacy Policy). date: 26 November 2015

The word number may be abbreviated No. in the body of tables and line art or in the text when used as a specific designator. Do not use the number sign (#) in place of the abbreviation. The word number should always be spelled out when it is used as a proper noun (eg, “Social Security number”). When referring to numbers of individuals in a study in tables, figures, and within parentheses the abbreviation N is used when referring to the entire sample; n refers to a subsample. (See also , Study Design and Statistics, Glossary of Statistical Terms.)Patients were

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