Welcome, participants, to the AMA Manual of Style Quiz Bowl. Every month at http://www.amamanualofstyle.com/, we offer subscribers a quiz on different aspects of the manual that help participants master AMA style and improve their editing skills. Previous quizzes have covered topics as varied as correct and preferred usage, genetics, tables, figures, and ethics, as well as numerous other subjects. In this blog, we will offer a sample question from each month’s quiz to whet your appetite. This month’s quiz is on Units of Measure: Format, Style, and Punctuation. So, here goes.

Edit the following sentence based on your understanding of section 18.3 of the AMA Manual of Style.

A total of 50 mg of etanercept were administered subcutaneously twice weekly for 12 weeks.

Well, how did you do? Did you identify the problem? Here’s the answer (use your mouse to highlight the text box):

A total of 50 mg of etanercept was administered subcutaneously twice weekly for 12 weeks.

Units of measure are treated as collective singular (not plural) nouns and require a singular verb (§18.3.3, Subject-Verb Agreement, p 791 in print).

So, did you enjoy this tidbit? If you are not sated, subscribe to the AMA Manual of Style online and take the full quiz.—Laura King, MA, ELS