Abbreviations - AMA Manual of Style

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Stacy Christiansen

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Within the body of the table and in column headings, units of measure and numbers normally spelled out may be abbreviated for space considerations (see 14.12, Abbreviations, Units of Measure; 18.0, Units of Measure; and 19.0, Numbers and Percentages). However, spelled-out words should not be combined with abbreviations for units of measure. For example, “First Week” or “1st wk” or “Week 1” may be used as a column heading, but not “First wk.” Abbreviations or acronyms should be explained in a footnote (see 4.1.3, Table Components, Footnotes).

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