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Abbreviating Number  

Stephen J. Lurie and Margaret A. Winker

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

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.021.270
Item type: 
section
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 ... More
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Accepted Usage  

Stephen J. Lurie and Margaret A. Winker

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

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.022.583
Item type: 
section
Spell out numbers for generally accepted usage, such as idiomatic expressions. One frequently appears in running text without referring to a quantity per se and may appear awkward if expressed as a ... More
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Beginning a Sentence, Title, Subtitle, or Heading  

Stephen J. Lurie and Margaret A. Winker

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

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.022.580
Item type: 
section
Use words for any number that begins a sentence, title, subtitle, or heading. However, it may be better to reword the sentence so that it does not begin with a number.Three hundred twenty-eight men ... More
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Combining Numerals and Words  

Stephen J. Lurie and Margaret A. Winker

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

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.021.267
Item type: 
section
Use a combination of numerals and words to express rounded large numbers and consecutive numerical expressions. Rounded large numbers, such as those starting with million, should be expressed with ... More
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Common Fractions  

Stephen J. Lurie and Margaret A. Winker

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

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.022.581
Item type: 
section
Common fractions are expressed with hyphenated words, whether the fraction is used as an adjective or a noun. Mixed fractions are typically expressed in numerals (see , Use of Numerals, Mixed ... More
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Consecutive Numerical Expressions  

Stephen J. Lurie and Margaret A. Winker

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

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.022.587
Item type: 
section
When 2 numbers appear consecutively in a sentence, either reword the sentence or spell out 1 of the numbers for clarity.Study participants were provided twenty 5-mL syringes. Avoid: In the cohort of ... More
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Decimals  

Stephen J. Lurie and Margaret A. Winker

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

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.022.588
Item type: 
section
The decimal form should be used when a fraction is given with an abbreviated unit of measure (eg, 0.5 g, 2.7 mm) to reflect the precision of the measurement (eg, 38.0 kg should not be rounded to 38 ... More
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Enumerations  

Stephen J. Lurie and Margaret A. Winker

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

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.021.269
Item type: 
section
Indicate a short series of enumerated items by numerals run in and enclosed within parentheses in the text (see also , Punctuation, Parentheses and Brackets).The testing format focused on 6 aspects: ... More
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Measures of Currency  

Stephen J. Lurie and Margaret A. Winker

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

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.022.578
Item type: 
section
For sums of money, use the appropriate symbol to indicate the type of currency (eg, $, €, £; see also , Units of Measure, Conventional Units and SI Units in JAMA and the Archives Journals, ... More
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Measures of Temperature  

Stephen J. Lurie and Margaret A. Winker

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

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.022.577
Item type: 
section
Use the degree symbol with Celsius or Fahrenheit measures of temperature. The degree symbol should be closed up (see , Units of Measure, Format, Style, and Punctuation, Spacing).The plates were ... More
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Measures of Time  

Stephen J. Lurie and Margaret A. Winker

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

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.022.576
Item type: 
section
Measures of time usually are expressed as numerals (see also , Abbreviations, Days of the Week, Months, Eras). When dates are provided, numerals should be used for day and year; the month should be ... More
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Mixed Fractions  

Stephen J. Lurie and Margaret A. Winker

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

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.022.575
Item type: 
section
For less precise measurements, mixed fractions may be used instead of decimals. These expressions usually involve time. Common fractions are typically spelled out (see , Spelling Out Numbers, Common ... More
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Numbers and Percentages  

Stephen J. Lurie and Margaret A. Winker

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

Print Publication Year: 
2007
Published Online: 
2009
eISBN: 
9780195382846
DOI: 
10.1093/jama/9780195176339.003.0019
Item type: 
chapter
ISBN: 
9780195176339
Any policy on the use of numbers in text must take into account the reader’s impression that numbers written as numerals (symbols) appear to emphasize quantity more strongly than numbers ... More
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Numbers of 4 or More Digits to Either Side of the Decimal Point  

Stephen J. Lurie and Margaret A. Winker

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

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.022.574
Item type: 
section
Commas are not used in large numbers. In 4-digit numbers, the digits are set closed up. For numbers of 10 000 or greater, a half-space or thin space is used to separate every 3 digits starting from ... More
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One Used as a Pronoun  

Stephen J. Lurie and Margaret A. Winker

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

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.022.582
Item type: 
section
The word one should be spelled out when used as a pronoun or noun.The investigators compared a new laboratory method with the standard one. These differences may be concealed if one looks only at the ... More
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Ordinals  

Stephen J. Lurie and Margaret A. Winker

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

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.022.584
Item type: 
section
Ordinal numbers generally express order or rank, rather than a precise quantity. Because they usually address nontechnical aspects of the objects they modify, ordinals are often found in literary ... More
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Percentages  

Stephen J. Lurie and Margaret A. Winker

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

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.022.589
Item type: 
section
The term percent derives from the Latin per centum, meaning by the hundred, or in, to, or for every hundred. The term percent and the symbol % should be used with specific numbers. Percentage is a ... More
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Reporting Proportions and Percentages  

Stephen J. Lurie and Margaret A. Winker

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

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.022.590
Item type: 
section
Whenever possible, proportions and percentages should be accompanied by the actual numerator (n) and denominator (d) from which they were derived. The numerator and denominator should be expressed as ... More
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Reporting Rates and Ratios  

Stephen J. Lurie and Margaret A. Winker

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

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.022.591
Item type: 
section
Use the virgule construction for rates when placed in parentheses (eg, 1/2) but never in running text. A colon is used for ratios (eg, 1:2). Rates should use the decimal format when the denominator ... More
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Roman Numerals  

Stephen J. Lurie and Margaret A. Winker

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

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.022.592
Item type: 
section
Use roman numerals with proper names (eg, Henry Ford III). Note that no comma is used before the numeral. However, arabic numerals should be used as designators in all other cases (eg, round 2, Table ... More

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