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Exponents

Phil B. Fontanarosa and Stacy Christiansen

in AMA Manual of Style: A Guide for Authors and Editors (10th edition)

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.022.547
Item type: 
section
SI reporting style uses exponents rather than certain abbreviations, such as cu and sq. ...

Expressing Quantities

Phil B. Fontanarosa and Stacy Christiansen

in AMA Manual of Style: A Guide for Authors and Editors (10th edition)

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.022.555
Item type: 
section
Arabic numerals are used for quantities with units of measure (see , Numbers and Percentages, Use of Numerals). By SI convention, it is preferable to use only numbers between 0.1 and 1000 and to use the ... More

Expressing Unit Names and Symbols

Phil B. Fontanarosa and Stacy Christiansen

in AMA Manual of Style: A Guide for Authors and Editors (10th edition)

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.021.257
Item type: 
section
The SI includes conventions for expressing unit names and abbreviations (often referred to as symbols) and for displaying them in text.The SI unit names are written lowercase (eg, kilogram) when spelled ... More
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Format, Style, and Punctuation

Phil B. Fontanarosa and Stacy Christiansen

in AMA Manual of Style: A Guide for Authors and Editors (10th edition)

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.021.258
Item type: 
section
The format, style, and punctuation guidelines generally apply for SI reporting but also are used for reporting most values in conventional units.SI reporting style uses exponents rather than certain abbreviations, ... More

Hyphens

Phil B. Fontanarosa and Stacy Christiansen

in AMA Manual of Style: A Guide for Authors and Editors (10th edition)

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.022.553
Item type: 
section
A hyphen is used to join 2 spelled-out units of measure.pascal-secondA hyphen is used to join a unit of measure and the number associated with it when the combination is used as an adjective. (See Temporary ... More

Indexes

Phil B. Fontanarosa and Stacy Christiansen

in AMA Manual of Style: A Guide for Authors and Editors (10th edition)

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.022.559
Item type: 
section
An index generally refers to a quantity derived from a ratio of 2 (or more) measurable quantities and often is used to compare individuals with each other or with normal values. Except for products or ... More

Laboratory Values

Phil B. Fontanarosa and Stacy Christiansen

in AMA Manual of Style: A Guide for Authors and Editors (10th edition)

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.022.570
Item type: 
section
UPDATE: We will discontinue using quotation marks to identify parts of an article, but retain the capitalization; eg, This is discussed in the Methods section (not the “Methods” section). This change ... More

Length, Area, Volume, Mass

Phil B. Fontanarosa and Stacy Christiansen

in AMA Manual of Style: A Guide for Authors and Editors (10th edition)

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.022.561
Item type: 
section
Measurements of length, area, volume, and mass are reported by means of metric units rather than English units (Table ). In less formal, nonscientific texts such as essays, use of nonmetric units, such ... More

Multiplication of Numbers

Phil B. Fontanarosa and Stacy Christiansen

in AMA Manual of Style: A Guide for Authors and Editors (10th edition)

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.022.558
Item type: 
section
Multiplication of numbers should be indicated by the multiplication sign (×) and may be used to express area (eg, a 15 × 35-cm2 burn), volume (eg, a 5.2 × 3.7 × 6.9-m3 cube), matrixes (eg, 2 × 2 table), ... More

Number Spacing

Phil B. Fontanarosa and Stacy Christiansen

in AMA Manual of Style: A Guide for Authors and Editors (10th edition)

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.022.557
Item type: 
section
By SI convention, the decimal point is the only punctuation mark permitted in numerals, and it is used to separate the integer and decimal parts of the number. The SI does not use commas in numbers, in ... More

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