Letters Reduced access to database

A publicly available database accelerates academic production

BMJ 2011; 342 doi: https://doi.org/10.1136/bmj.d637 (Published 01 February 2011) Cite this as: BMJ 2011;342:d637
  1. Yu-Chun Chen, doctoral researcher1,
  2. Jau-Ching Wu, physician2,
  3. Tzeng-Ji Chen, director3,
  4. Thomas Wetter, professor1
  1. 1Section of Medical Informatics, Institute of Medical Biometry and Informatics, University of Heidelberg, D-69120 Heidelberg, Germany
  2. 2Department of Neurosurgery, Neurological Institute, Taipei Veterans General Hospital, Taipei 112, Taiwan
  3. 3Section of Community Medicine, Department of Family Medicine, Taipei Veterans General Hospital
  1. yu-chun.chen{at}stud.uni-heidelberg.de

Electronic health databases are popular as research materials in medical studies.1 Our analysis of publications that used the general practice research database (GPRD) as their main data source found that from 1995 to 2009, GPRD had attracted 1251 authors from 22 countries. In total, 749 studies were published in …

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