Jump to ContentJump to Main Navigation
AMA Manual of Style (10th ed.) : A Guide for Authors and Editors

AMA Manual of Style Committee

Publisher:
Oxford University Press
Print Publication Date:
Mar 2007
Print ISBN-13:
9780195176339
Published to AMA Manual of Style:
Apr 2009
DOI:
10.1093/jama/9780195176339.001.0001
© American Medical Association
Contents

Abbreviations

Chapter:
Plurals
Author(s):

Brenda Gregoline

For most all-capital abbreviations, the plural is formed by adding s. Do not use an apostrophe before the s. (See also 8.7.5, Punctuation, Apostrophe, Using Apostrophes to Form Plurals.)

CIs

HMOs

EEGs

ICUs

ORs

RBCs
Note: When plural all-capital-letter abbreviations are found in an all-capital setting, such as a first-level heading, the plural s is still lowercase.

REFERRAL PATTERNS IN MIDWESTERN HMOs