Thursday, July 21, 2011 Study Names PTJ 'Top Core Journal' According to a study published this month in the Journal of the Medical Library Association, Physical Therapy (PTJ) is the top physical therapy core journal, having been cited by 10,088 journal articles between 2005 and 2007. (The next highest number of citations to a physical therapy core journal during that period was 2,233.) For this study, researchers recorded data (type of literature, year of publication, and journal title) for each cited reference in each article of 4 source journals for the 3 years. The journal titles were ranked in descending order by frequency of citations and divided into 3 zones using Bradford's Law of Scattering. Four databases were analyzed for coverage rates of articles published in the Zone 1 and Zone 2 journals in 2007. Journal articles were the most frequently cited type of literature, with 16 journals supplying one-third of the cited journal references. PTJ was the most commonly cited title. Of the databases analyzed, CINAHL provided the highest coverage rate for Zone 1 2007 publications. There were more cited articles published from 2000 to 2007 than in any previous full decade. APTA member Dennis W. Fell, PT, MD, led this study, which was coauthored by association members Melanie Joy Buchanan, PT, DPT, and Joel Scherr, PT, DPT, OCS. The results of the study, say the authors, can help physical therapists and librarians determine important journals in this discipline.