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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)

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 ...
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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)

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 ...
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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)

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 ...
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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)

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 ...
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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)

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 ...
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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)

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 ...
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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)

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 ...
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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)

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 ...
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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)

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 ...
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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)

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 ...
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