Answered By: Writing Center Last Updated: Nov 16, 2015 Views: 0
If you use a number at the beginning of a title, as in any sentence in AMA, you must spell it out. You may use the numeral form of the year at the beginning of a sentence/title, but this is not advised. If you have a number at the beginning of a sentence/title, you might consider revising the sentence so that the number is no longer at the beginning.
For numbers other than those beginning a sentence/title, it is generally preferable to include their numeral form. There are a few exceptions to this, including, but not limited to: common fractions, ordinal numbers "first" through "ninth," one, and a few other instances where spelling out the word will increase clarity and is commonly practiced.
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Information from: Iverson, C, Christiansen, S, Flanagin, A, et al; AMA Manual of Style: A Guide for Authors and Editors. 10th ed. New York, New York: Oxford University Press, Inc.; 2007.
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