Methods: The investigators surveyed librarians supporting American Association of Medical Colleges (AAMC)–accredited medical schools (n=58/125) on the USMLE and librarians supporting American Dental Association (ADA)–accredited dental schools (n=23/56) on the NBDE. The investigators analyzed the data by cross-tabulating and filtering the results using EFM Continuum web survey software. Investigators also surveyed print and electronic USMLE and NBDE preparation materials from 2004–2007 to determine the number of publications and existence of reviews.

Results: A majority of responding AAMC libraries (62%, n=58) provide at least 1 electronic or online USMLE preparation resource and buy an average of 11.6 print USMLE titles annually. Due to a paucity of NBDE print and electronic resources, ADA libraries bought significantly fewer print resources, and only 1 subscribed to an electronic resource. The most often reported evaluation methods for both populations were feedback from medical or dental students, feedback from medical or dental faculty, and online trials. Some AAMC (10%, n=58) and ADA libraries (39%, n=23) libraries reported that no evaluation of these materials occured at their libraries.

Conclusions: From 2004–2007, publishers produced 45 USMLE preparation resources (total n=546) to every 1 NBDE preparation resource (total n=12). Users' needs, institutional missions and goals, financial status, and official collection policies most often underlie decisions to collect or not collect examination preparation materials. Evaluating the quality of examination preparation materials can be problematic due to lack of published reviews, lack of usability testing by libraries, and librarians' and library users' unfamiliarity with the actual content of examinations. Libraries must integrate faculty and students into the purchase process to make sure examination preparation resources of the highest quality are purchased.