1. Conclusions  A high percentage share of meeting abstracts (36%) and a low percentage share of articles (40%) was found in the ten journals in the category of public, environmental & occupational health.  English was the only one language in the ten journals.  The most frequently used author keyword in articles was ‘mortality’ and followed by ‘risk factors’, ‘case-control studies’, and ‘smoking’.  The US, UK, and Canada produced 53% of the total article where the seven major industrial countries accounted for the majority of the total production (84%).  The three most corresponding institutes were Harvard University, the Centers for Disease Control and Prevention, and the National Cancer Institute at US. A BIBLIOMETRIC STUDY OF THE TREND IN DOCUMENTS PUBLISHED IN A CATEGORY OF PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH Syue-Liang Jhou 1, Wen-Ta Chiu 2, Yu-Ting Feng 3, I-Hsin Lin 3, Chien-Tien Su 2 and Yuh-Shan Ho 4 1 Department of Internal Medicine, Taipei Medical University -Wan-Fang Hospital, Taipei, Taiwan 2 Department of Neurosurgery, Taipei Medical University -Wan-Fang Hospital, Taipei, Taiwan 3 School of Public Health, Taipei Medical University, Taipei, Taiwan 4 Bibliometric Centre, Taipei Medical University -Wan-Fang Hospital, Taipei, Taiwan Introduction The purpose of this study is to survey the publications in the category of public, environmental & occupational health. A bibliometric study was conducted with the Science Citation Index (SCI), Philadelphia, PA, USA, search to evaluate 18,405 documents published in ten most representative public, environmental & occupational health journals for the period 2000-2004. Twelve document types were found in the total of 18,405 documents. Of the total, 40% were published as articles and 36% were meeting abstracts. Methods In the 2004 edition of the Journal Citation Reports (JCR), 5968 journals are listed in the SCI. The impact factor (IF) of a journal is defined by the Journal Citation Reports (JCR), and is derived by dividing the number of current citations to articles published in the previous two years by the total number of articles published in those years. The IF is used to evaluate a journal’s relative importance, especially when compared to others in the same field. Documents used in this study were obtained from the top ten ranking of IF journals which were listed in the category of public, environmental & occupational health, included American Journal of Epidemiology, Cancer Epidemiology Biomarkers & Prevention, Who Technical Report Series, Annual Review of Public Health, Environmental Health Perspectives, Epidemiology, International Journal of Epidemiology, American Journal of Public Health, American Journal of Preventive Medicine, and Tobacco Control.Results SP, single country publications CP, international collaboration publications P, Total publications Table 1. Ten most article productive countries Table 2. Ten most meeting abstract productive countries Figure 1. Distribution of author keyword used Figure 2. Distribution of document type