Instructions on format for AMA are not explicitly stated in the AMA Manual of Style. These instructions come from Dr. Abel Scribe's AMA MedStyle Stat! Web site. Please use these guidelines as a rough estimate only of the requirements, and seek your professor's expertise for more concrete support.
One inch margins are required around the text. Leave the right margin unjustified.
Block paragraph spacing is recommended for final manuscripts. Single space within the abstract, notes, titles and headings, block quotes, tables and figures, and references (everything but the main text), double space before and after each single spaced block.
JAMA specifies a 12-point or 10-point font. There is no requirement for the typeface. A serif font is commonly used in publication (eg, Times Roman). A sans serif font often looks good in draft manuscripts.
Half-inch indents are standard.
Every page of a research paper is numbered consecutively starting with the title page. Do not change numbering systems through the text, even with lengthy data sets or appendixes.
A short title header goes at the top of the page, aligned with the page number or left margin. This takes the place of the "running head" required of copy manuscripts.