frequently asked questions

Questions From Users of the Manual

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Q:   If one has a list of laboratory values, does one have to keep repeating the units of measure, eg, albumin levels of 3.8 g/dL, 3.9 g/dL, and 4.0 g/dL, or is once enough, eg, albumin levels of 3.8, 3.9, and 4.0 g/dL.

A:  No, the unit of measure does not have to be repeated:  albumin levels of 3.8, 3.9, and 4.0 g/dL is fine.  The exception to this is for units of measure that are set closed up to the number or value that they follow, such as the degree sign or the percent sign.  In these cases, the unit of measure should be repeated:  38%, 45%, and 53%.

Q:   What abbreviation does JAMA/Archives prefer for adjusted odds ratio?

A:   We prefer AOR.

Q:   Is “data on file” acceptable in a bibliography or in parentheses in the text?  I don’t see this in the Manual.

A:   The phrase “data on file” is a little vague.  What a reader who’s interested in more information might really want to know is how the author of the manuscript saw the data (and how, perhaps, the interested reader might be able to see it too).  Something more granular about how the author came upon the information would be more helpful.  For example, did the author learn about the information through a personal communication (and is that personal communication the “data on file”?)?  If so, see 3.13.9 in the Manual for how to style this as an in-text references.  Is the “data on file” an internal memo at an institution and, if so, does it have a document number that could be listed in the reference list?

Q:   Would you hyphenate “quality of life” when it’s used as a noun as well as when it’s used as an adjective?

A:   We usually hyphenate as an adjective and not as a noun.—Cheryl Iverson, MA

Questions From Users of the Manual

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Q:    If a person has multiple advanced degrees, should the medical degree always be listed first, eg, MD, PhD?

A:   We would advise following the author’s preference as far as the order in which degrees are listed.

Q:   I know that journal names are typically italicized in their expanded form, eg, Journal of the American Medical Association. Should the abbreviation also be italic, eg, JAMA?

A:   Yes. The same policy applies to book titles and their expansions. See, for example, International Classification of Diseases, Ninth Revision and ICD-9 in the list in 14.11.

Q:   On page 500, in the list of journal abbreviations, is there a reason that the journal Transplantation is spelled out in full as Transplantation and yet other journals whose titles include that word abbreviate it as Transplant?

A:    Yes, there is a reason. See the sentence on page 479 advising that “Single-word journal titles are not abbreviated.”

Q:    The AMA Manual of Style says that tables should be able to stand independently and not require explanation from the text. Could you clarify “stand independently”? Our publication has taken this rule to an extreme, often adding lengthy definitions of terms already provided in the text. One recent example added 15 footnotes to a single table!

A:   As with so many things editorial, this requires judgment.  We were thinking about things like this:

  • Expansion of any abbreviations, given in the text, provided again in a single footnote to the table.
  • Explanation of things that might not be apparent from the tables (eg, what the various groups are if they are only identified as “group 1, group 2, etc” in the table).
  • Explanation of how to convert units from conventional to SI (or the reverse), if this is important in your publication/to your audience.
  • Explanation of some statistical method that would likely not be familiar to your readers without some information—the bare bones, not a lengthy explanation. If a lengthy explanation is necesssary, simply refer the reader to the relevant section or subsection of the text.
  • Explanation of a phrase used for shorthand in a table stub or column head that might not be clear if all you were looking at was the table (eg, if a column head is “Unstable Vital Signs,” explain in a footnote the specific items and values that this refers to).

It truly is a question of judgment and I suspect that 15 footnotes in a single table is taking it too far.—Cheryl Iverson, MA

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Q:    When a bulleted list is introduced by a brief comment, eg, “The principal signs and symptoms of rheumatoid arthritis are as follows,” and all of the items in the bulleted list are from the same source, does a citation need to be placed at the end of each bulleted item or is it sufficient to place the citation at the end of the brief introductory comment?

A:    We would recommend placing the citation within the text that introduces the bulleted list if all the items in the list came from the same source.  If the items came from multiple sources, then placing the appropriate citation at the end of each item would be necessary.

Q:    In this example, would you hyphenate “well child”?

  • He was taken for a well-child [or well child] checkup.

A:    Yes, we would hyphenate in this case.

Q:    The Manual says nothing about how to treat reference citations in the abstract.  Should such citations simply be deleted from the abstract and from the reference list or should complete bibliographic details about the reference be inserted in the abstract parenthetically?

A:    You are quite right that the Manual does not mention how to treat references in the abstract as we never include reference citations (either as superscript numbers or within parentheses in the text) in the abstract (see 2.3, fourth bullet, re not citing references in an abstract).  If an author has included references in an abstract, it doesn’t seem advisable to delete the references altogether.  Discuss with the author trying to include the references early on in the manuscript itself.  It seems unlikely that an author would consider a reference important enough to include in the abstract and then not cite it in the text.

Q:   I don’t see anything in the Manual about how to style “e-mail,” ie, with or without a hyphen.  Help, please.

A:   Although the Manual doesn’t specifically address this point, it does include guidance on capping (see 10.7) and, in that section, it’s clear that the Manual recommends a hyphen in “e-mail.”  If you use the Manual online, for questions like this the “quick search” box is invaluable.  Just type the term you are looking for into the search box and the results should guide you.  If you had begun with “email,” you would have gotten no results, which would—I hope—have tipped you off to try “e-mail,” which produces 3 pages of results.—Cheryl Iverson, MA

Questions From Users of the Manual

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Q:  Do you recommend end point or endpoint?  I have folks dying on their grammatical swords over this and thought you might have an opinion.

A:  We follow Dorland’s and use end point.  Replying quickly so as little blood as possible is shed.

Q:  I failed to find guidance in the Manual on correct use of the apostrophe with plural compound nouns, eg, the possessive of mothers-in-law.  What would you advise?

A:  You are quite right that we don’t include any examples that address this specifically and it would be helpful to do so.  (A thought for the next edition—or an annotation for section 8.7.3 if you are an online subscriber.)  I would recommend mothers-in-law’s, as in mothers-in-law’s first meeting.  The Chicago Manual of Style also recommends this (section 7.23):  my sons-in-law’s addresses.

Q:  Where is the style going on the treatment of Web site?  We use Web site but are seeing it more and more frequently as website, or web site, or Website.

A:  JAMA and the Archives Journals are still sticking with Web site, but the new edition of the Chicago Manual of Style is recommending website.  So, it appears that things are, indeed, shifting but we have not shifted yet!

Q:  We’re having a debate about the order of footnotes in a table.  Are they ordered left to right, top to bottom?  Or are they ordered by where they fall in terms of the table components (eg, title, column heading, row heading, field) and then left to right, top to bottom?

A:  There’s a great example in the Manual on on page 93 (Table 10).  In that table, which has a raft of footnotes, you’ll see that the order is basically from top to bottom and, within that, from left to right…as we expect readers would move through a table as they were reading it.  That said, there is nothing sacred about this and a publication could certainly establish a different policy (eg, with the table body, priority could be given to footnotes attached to table stubs, so that if you had footnotes a and b in stubs high up in the table and then footnotes c, d, and e in rows below this but NOT in the table stubs, and then footnote f in a later stub, you might decide to make the stub footnotes a through c [renaming f to c] and then the footnotes within the body of the table d through f. )—Cheryl Iverson, MA