• Julie Glanville, Tony Kendrick, Rosalind McNally, John Campbell, and F D Richard Hobbs.
• York Health Economics Consortium, University of York.
• BMJ. 2011 Jan 1; 342: d1028.

ObjectiveTo compare the volume and quality of original research in primary care published by researchers from primary care in the United Kingdom against five countries with well established academic primary care.DesignBibliometric analysis.SettingUnited Kingdom, United States, Australia, Canada, Germany, and the Netherlands. Studies reviewed Research publications relevant to comprehensive primary care and authored by researchers from primary care, recorded in Medline and Embase, with publication dates 2001-7 inclusive.Main Outcome MeasuresVolume of published activity of generalist primary care researchers and the quality of the research output by those publishing the most using citation metrics: numbers of cited papers, proportion of cited papers, and mean citation scores.Results82,169 papers published between 2001 and 2007 in the six countries were classified as research on primary care. In a 15% pragmatic random sample of these records, 40% of research on primary care from the United Kingdom and 46% from the Netherlands was authored by researchers employed in a primary care setting or employed in academic departments of primary care. The 141 researchers with the highest volume of publications reporting research findings published between 2001 and 2007 (inclusive) authored or part authored 8.3% of the total sample of papers. For authors with the highest proportion of publications cited at least five times, the best performers came from the United States (n=5), United Kingdom (n=4), and the Netherlands (n=2). In the top 10 of authors with the highest proportions of publications achieving 20 or more citations, six were from the United Kingdom and four from the United States. The mean Hirsch index (measure of a researcher's productivity and impact of the published work) was 14 for the Netherlands, 13 for the United Kingdom, 12 for the United States, 7 for Canada, 4 for Australia, and 3 for Germany.ConclusionThis international comparison of the volume and citation rates of papers by researchers from primary care consistently placed UK researchers among the best performers internationally.

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