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Conventional Units and SI Units in JAMA and the Archives Journals
Phil B. Fontanarosa and Stacy Christiansen
in AMA Manual of Style: A Guide for Authors and Editors (10th edition)
In the United States, most physicians and other health care professionals use conventional units for most commonly encountered clinical measurements (eg, blood pressure), and most clinical ...
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Currency
Phil B. Fontanarosa and Stacy Christiansen
in AMA Manual of Style: A Guide for Authors and Editors (10th edition)
Amounts of money in US, Canadian, and British currency are expressed as a decimal number or whole number preceded by the symbol for the unit of measure for the currency.The cost-effectiveness ...
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Drug Doses
Phil B. Fontanarosa and Stacy Christiansen
in AMA Manual of Style: A Guide for Authors and Editors (10th edition)
Drug doses are expressed in conventional metric mass units (eg, milligrams or milligrams per kilogram), rather than in molar SI units. Moreover, certain drugs (such as insulin or heparin) may be ...
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Energy
Phil B. Fontanarosa and Stacy Christiansen
in AMA Manual of Style: A Guide for Authors and Editors (10th edition)
The calorie is the unit of measure often used in chemistry and biochemistry for reporting heat energy. A value of 1 calorie is the amount of energy (heat) required to raise the temperature of 1 g of ...
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Laboratory Values
Phil B. Fontanarosa and Stacy Christiansen
in AMA Manual of Style: A Guide for Authors and Editors (10th edition)
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 ...
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Length, Area, Volume, Mass
Phil B. Fontanarosa and Stacy Christiansen
in AMA Manual of Style: A Guide for Authors and Editors (10th edition)
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, ...
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pH
Phil B. Fontanarosa and Stacy Christiansen
in AMA Manual of Style: A Guide for Authors and Editors (10th edition)
Although SI nomenclature could be used to express values of hydrogen ion concentration (nmol/L), the pH scale (1 14) is used. |
Pressure
Phil B. Fontanarosa and Stacy Christiansen
in AMA Manual of Style: A Guide for Authors and Editors (10th edition)
Blood pressure and intraocular pressure are reported in millimeters of mercury (mm Hg); cerebrospinal fluid pressure is reported as centimeters of water (cm H2O). The pascal (newton per square meter ...
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Radiation
Phil B. Fontanarosa and Stacy Christiansen
in AMA Manual of Style: A Guide for Authors and Editors (10th edition)
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 ...
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Solutions and Concentration
Phil B. Fontanarosa and Stacy Christiansen
in AMA Manual of Style: A Guide for Authors and Editors (10th edition)
A molar solution contains 1 mol (1 g molecular weight) of solute in 1 L of solution. The SI style for reporting molar solutions is mol/L; for solutions with millimolar concentrations, mmol/L is used; ...
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