This study compared the patterns of duplicate articles between KoreaMed and PubMed journals based on a division of duplicate publications into the 4 categories of ‘copy,’ ‘salami’ (fragmentation), ‘imalas’ (disaggregation), and ‘others,’ as well as in terms of the 11 subcategories suggested by Bae et al., which further elaborate on those 4 main categories. We hypothesized that these 2 groups of articles would show different patterns of duplication. Duplicate publications were identified in a random sample of 5% of the articles from the KoreaMed database published between 2004 and 2009, while all articles with the publication type of ‘duplicate publication’ were selected from PubMed over the same period. The selected articles were classified based on the 4 categories and 11 subcategories of duplicate publications, and the data from the 2 groups were compared. A total of 108 articles were selected from KoreaMed and 45 articles were obtained from PubMed. The category of copy was the most common in both databases. The next most frequent pattern was imalas (disaggregation). Pattern of duplicate publication between 2 databases showed no correlation (P = 0.8754). Although the 108 articles from KoreaMed were allocated to all 11 Bae et al.’s subcategories, those from PubMed were allocated to only 8. The above results showed that the articles in the 2 databases had different patterns of duplication, as defined in terms of the 11 subcategories. The use of these 11 subcategories will help journal editors to develop an appropriate framework for considering a variety of duplication types.
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This study aimed to characterize the current status of a variety of digital standards in medical journals published in Korea in 2016. A total of 256 journals listed as member journals of the Korean Association of Medical Journal Editors were searched to evaluate the following items: an independent journal homepage domain; an e-submission system; the use of digital object identifiers (DOIs), CrossMark, and FundRef; the availability of text and data mining; the presence of Open Researcher and Contributor ID (ORCID) information, an open access declaration, and the language of the journal. The search was carried out from July 29 to 30, 2016. Independent journal homepage domains were found for 190 of the 256 journals (74.1%). Of the journals, 216 were equipped with an e-submission system (84.4%), and 218 journals used DOIs (85.2%). CrossMark and FundRef were used in 105 journals (41.0%), text and data mining were available for 31 journals (11.1%), ORCID identifiers were present in 24 journals (9.4%), and an open access declaration according to a Creative Commons license was present for 199 journals (77.8%). The number of English-language journals was 130 (50.8%). Open access journals and English-language journals were found to have implemented more digital standards than non-open access journals and Korean-language journals respectively. The above results demonstrate that digital standards have been rapidly implemented by a considerable number of medical journals in Korea. In order to facilitate the more active promotion of journals to the international level, more journals should utilize these standards. The use of full-text JATS (journal article tag suite) XML is recommended for the easy adoption of DOIs, CrossMark, FundRef, and ORCID.
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This year marked the twentieth anniversary of the Korean Association of Medical Journal Editors (KAMJE). The number of member journals has increased from 105 to 257 since its inception in 1996. In the same period, the number of journals listed in the Science Citation Index Expanded (SCIE) has increased from zero to 35. The average journal impact factor (JIF) that was initially 0.13 has now increased by more than tenfold on average to 1.45 as of 2014. Many KAMJE journals that are not indexed in the SCIE are putting their best effort towards eventual inclusion. Following listing with SCIE, however, editors have turned their attention towards the JIF and have shown interest in early online publication as a means of improving the JIF. The current status of PubMed electronic publication ahead of print (EAP) was surveyed among KAMJE journals that are indexed in the SCIE, and the impact of this EAP on the improvement of the JIF was investigated. Based on the survey, more than half of the members have started or are planning on implementing EAP. However, these efforts were found to be still in their infancy, and they have been insufficient to serve as a basis for scientific analysis. Since the sample size is too small and the implementation period too short to statistically analyze the effects of early publication on the JIF, a case-by-case approach was taken. Based on case studies, it is difficult to draw conclusions yet about whether online early publication enhances the JIF.