Unit Sales of Print Books by Category

Category Oct. 9, 2011 Oct. 7, 2012 % Chge Week % Chge YTD
Adult Nonfiction 3,825 4,005 5% -16%
Adult Fiction 2,261 2,533 12 -14
Juvenile Fiction 2,385 2,542 7 -3
Juvenile Nonfiction 531 614 16 3

Unit Sales of Print Books by Format

Category Oct. 9, 2011 Oct. 7, 2012 % Chge Week % Chge YTD
Hardcover 2,604 2,943 13% -7.5%
Trade Paperback 5,052 5,364 6 12
Mass Market Paperback 1,205 1,159 -4 -25
Board Books 285 333 17 1.5
Audio 80 92 15 -9

Category segment excludes "other," which includes audio, maps, calendars, and other miscellaneous categories. Format excludes calendars, boxed sets, and other formats (i.e., maps, minibooks).

Source: Nielsen BookScan and Publishers Weekly. Nielsen BookScan's U.S. Consumer Market Panel covers approximately 75% of the print book market and continues to grow.