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Background: This study aimed to study the relationship between the teaching status of Research Methods as well as Biostatistics and academic research skills, from the postgraduate students' point of view. Methods: This cross-sectional study, conducted in 2022, examined 633 postgraduate students in Iran University of Medical Sciences in 2016-2022. The data included demographic and educational-research information, such as the teaching Biostatistics and course credit, its score, the duration of writing the thesis, and its score. Data analysis was done using univariate and multiple logistic regression throughout the odds ratio (OR) in SPSS with a significance level of 0.05. Results: 47.7% of the graduates passed Biostatistics and 79.8% published paper from the thesis. The proposal writing in Master’s and MPH graduates, in people without a statistical consultant prolonged significantly (OR:1.67, P=0.017), as well as in PhD graduates, who have passed Research Methods, (OR=2.94, P=0.039), and in clinical graduates, in those who did not receive a methodologist advise (OR=2.7, P=0.024). In Master’s and MPH students, who had passed the Biostatistics or Research Method experienced a longer duration in thesis writing (OR=1.77 and 1.38, respectively). Conclusion: Passing the Biostatistics and Research Methods, and the presence of a statistical consultant or methodologist in the thesis of the graduates, shortened the time of writing the proposal or the thesis, and also caused them to get a better score in the thesis.

Background and Aim: Scientific journals are the most major tools in disseminating research findings. With the increasing number and price of scientific journals, libraries need to select journals. Citation analysis is a practical method in identifying the best titles to be subscribed. This study was to identify core journals in the field of dentistry using citation analysis. Materials and Methods: Two hundered and seventy six documents including dentistry theses (241 titles) and faculty papers (35 titles) indexed in Science Citation Index (SCIE) were selected and their references were extracted and evaluated using citation analysis methods. The distribution frequency of journals confirmed the Bradford’s Law of Scattering representing core dentistry journals. Results: Eleven thousand twenty three references were totally extracted. Average reference per theses and papers was 39/25 and 44/74, respectively. English journals and books were the most frequent referred documents having 95% of total references approximately. The most updated references were in English dated during 2001-2005 and 2006-2010. Using the Bradford’s Law, five journals were introduced as core dentistry journals. Conclusion: Selecting and subscribing core journals leads into cost-effectiveness in libraries and plays an important role in meeting user’s needs. While having many challenges in accessing scientific resources, core journals selection and subscription is an intelligent action resulting in effective use of financial resources.

Background and Aim: Scientific journals are the most major tools in disseminating research findings. With the increasing number and price of scientific journals, libraries need to select journals. Citation analysis is a practical method in identifying the best titles to be subscribed. This study was to identify core journals in the field of dentistry using citation analysis. Materials and Methods: Two hundered and seventy six documents including dentistry theses (241 titles) and faculty papers (35 titles) indexed in Science Citation Index (SCIE) were selected and their references were extracted and evaluated using citation analysis methods. The distribution frequency of journals confirmed the Bradford’s Law of Scattering representing core dentistry journals. Results: Eleven thousand twenty three references were totally extracted. Average reference per theses and papers was 39/25 and 44/74, respectively. English journals and books were the most frequent referred documents having 95% of total references approximately. The most updated references were in English dated during 2001-2005 and 2006-2010. Using the Bradford’s Law, five journals were introduced as core dentistry journals. Conclusion: Selecting and subscribing core journals leads into cost-effectiveness in libraries and plays an important role in meeting user’s needs. While having many challenges in accessing scientific resources, core journals selection and subscription is an intelligent action resulting in effective use of financial resources. [ABSTRACT FROM AUTHOR]