Papers by Erfan Shamsoddin
PLOS ONE
Objective The use of phrases such as “data/results not shown” is deemed an obscure way to represe... more Objective The use of phrases such as “data/results not shown” is deemed an obscure way to represent scientific findings. Our aim was to investigate how frequently papers published in dental journals use the phrases and what kind of results the authors referred to with these phrases in 2021. Methods We searched the Europe PubMed Central (PMC) database for open-access articles available from studies published in PubMed-indexed dental journals until December 31st, 2021. We searched for “data/results not shown” phrases from the full texts and then calculated the proportion of articles with the phrases in all the available articles. From studies published in 2021, we evaluated whether the phrases referred to confirmatory results, negative results, peripheral results, sensitivity analysis results, future results, or other/unclear results. Journal- and publisher-related differences in publishing studies with the phrases in 2021 were tested with Fisher’s exact test using the R v4.1.1 softwa...
Background: To investigate gender differences in scientometric indices among faculty members in d... more Background: To investigate gender differences in scientometric indices among faculty members in dental schools across Iran. This included overall data and speciality-specific data.Methods: The publication profiles of academic staff in all dental schools were examined using the Iranian Scientometric Information Database (ISID, http://isid.research.ac.ir). Variables analysed were working field, academic degree, total number of papers, papers per year, total number of citations, percentage of self-citation, h-index, g-index, citations per paper, gender, university type, number of years publishing, proportion of international papers, first-author papers, and corresponding-author papers. Mann-Whitney and Kruskal-Wallis nonparametric tests were used to analyse the relationship between background characteristics and scientometric indicators. The extracted data were analysed using R v4.0.1.Results: The database included 1850 faculty members, of which about 60% (1104 of 1850) were women. Men...
European Journal of Paediatric Dentistry, 2021
Additional file 3. The number, mean score and median score of responses to each item in the "... more Additional file 3. The number, mean score and median score of responses to each item in the "reporting of scientific misconduct" section.
This is an opensource image sketched by me (Erfan Shamsoddin). There is no need to reference me o... more This is an opensource image sketched by me (Erfan Shamsoddin). There is no need to reference me or anyone when using this image as it is opensource.
This is an opensource image of the lungs, created by me (Erfan Shamsoddin). There is no need to r... more This is an opensource image of the lungs, created by me (Erfan Shamsoddin). There is no need to reference me or anyone in your work as it is opensource.
This is an opensource image created by me (Erfan Shamsoddin) depicting the oral cavity. No need t... more This is an opensource image created by me (Erfan Shamsoddin) depicting the oral cavity. No need to reference me or anyone as this is an opensource file.
The Lancet
Background Better evaluation of existing health programmes, appropriate policy making against eme... more Background Better evaluation of existing health programmes, appropriate policy making against emerging health threats, and reducing inequalities in Iran rely on a comprehensive national and subnational breakdown of the burden of diseases, injuries, and risk factors. Methods In this systematic analysis, we present the national and subnational estimates of the burden of disease in Iran using the Global Burden of Disease Study 2019. We report trends in demographics, all-cause and cause-specific mortality, as well as years of life lost (YLLs), years lived with disability (YLDs), and disability-adjusted life-years (DALYs) caused by major diseases and risk factors. A multi-intervention segmented-regression model was used to explore the overall impact of health sector changes and sanctions. For this analysis, we used a variety of sources and reports, including vital registration, census, and survey data to provide estimates of mortality and morbidity at the national and subnational level in Iran. Findings Iran, which had 84•3 million inhabitants in 2019, had a life expectancy of 79•6 years (95% uncertainty interval 79•2-79•9) in female individuals and 76•1 (75•6-76•5) in male individuals, an increase compared with 1990. The number of DALYs remained stable and reached 19•8 million (17•3-22•6) in 2019, of which 78•1% were caused by non-communicable diseases (NCDs) compared with 43•0% in 1990. During the study period, age-standardised DALY rates and YLL rates decreased considerably; however, YLDs remained nearly constant. The share of age-standardised YLDs contributing to the DALY rate steadily increased to 44•5% by 2019. With regard to the DALY rates of different provinces, inequalities were decreasing. From 1990 to 2019, although the number of DALYs attributed to all risk factors decreased by 16•8%, deaths attributable to all risk factors substantially grew by 43•8%. The regression results revealed a significant negative association between sanctions and health status. Interpretation The Iranian health-care system is encountering NCDs as its new challenge, which necessitates a coordinated multisectoral approach. Although the Iranian health-care system has been successful to some extent in controlling mortality, it has overlooked the burden of morbidity and need for rehabilitation. We did not capture alleviation of the burden of diseases in Iran following the 2004 and 2014 health sector reforms; however, the sanctions were associated with deaths of Iranians caused by NCDs. Funding Bill & Melinda Gates Foundation.
This is an opensource image sketched by me (Erfan Shamsoddin). There is no need to reference me o... more This is an opensource image sketched by me (Erfan Shamsoddin). There is no need to reference me or anyone when using this image as it is opensource.
Additional file 1. The number, mean score and median score of responses to each item in the "... more Additional file 1. The number, mean score and median score of responses to each item in the "perception of workplace environment" section.
Journal of Medical Ethics and History of Medicine, 2020
Assessment of scientific misconduct is considered to be an increasingly important topic in medica... more Assessment of scientific misconduct is considered to be an increasingly important topic in medical sciences. Providing a definition for scientific research misconduct and proposing practical methods for evaluating and measuring it in various fields of medicine discipline are required. This study aimed at assessing the psychometric properties of Scientific Research Misconduct-Revised (SMQ-R) and Publication Pressure Questionnaires (PPQ). After translation and merging of these two questionnaires, the validity of the translated draft was evaluated by 11-member expert panel using Content Validity Index (CVI) and Content Validity Ratio (CVR). Reliability of the final questionnaire, completed by 100 participants randomly chosen from medical academic members, was assessed by calculating Cronbach’s alpha coefficient. The final version was named Persian Research Misconduct Questionnaire (PRMQ) and consisted of 63 question items. The item-level content validity indices of 61 questions were ab...
Objectives Asparagus officinalis (A. officinalis) extract has several bioactive ingredients. This... more Objectives Asparagus officinalis (A. officinalis) extract has several bioactive ingredients. This study assessed the healing effects of A. officinalis methanolic extract. Methods In this experimental study, after preparing the methanolic extract of A. officinalis with a concentration of 100 , its bioactive ingredients were determined using high-performance liquid chromatography (HPLC) and then its cytotoxicity was assessed using the methyl thiazolyl tetrazolium (MTT) assay. Five experimental groups with 25 samples were assessed as follows: (I)human gingival fibroblast(HGFs) cultured in high-glucose Dulbecco’s modified Eagle’s medium (DMEM), (II) same as group Ibut with 10 μg/mL methanolic extract of A. officinalis, (III) same as group Ibut with 25μg/mL methanolic extract of A. officinalis, (IV) same as group Ibut with 50 μg/mL methanolic extract of A. officinalis, and (V)same as group Ibut with 100μg/mL methanolic extract of A. officinalis. Cell motility in the control group and gro...
Journal of Clinical Periodontology, 2021
BMC Medical Ethics, 2021
Background Research misconduct is a global concern in biomedical science. There are no comprehens... more Background Research misconduct is a global concern in biomedical science. There are no comprehensive data regarding the perception and situation of scientific misconduct among the Iranian medical faculty members. We conducted a nationwide survey to assess the research misconduct among the medical faculty members in Iran. Methods We used the Persian version of the research misconduct questionnaire (PRMQ) on the Google Forms platform. We sent the survey link to a systematic random sample of medical faculty members in Iran (N = 4986). Descriptive analyses were performed on the individual items of the PRMQ, with frequencies and percentages for categorical and Likert-type response items, and means and standard deviation (S.D.) for continuous variables. Chi-square analysis was conducted to test hypotheses examining differences in the frequency of responses related to factors influencing misconduct. We also defined four tenure categories (TC) based on the working years of the participants ...
JAMA Oncology, 2021
Global Burden of Disease 2019 Cancer Collaboration IMPORTANCE The Global Burden of Diseases, Inju... more Global Burden of Disease 2019 Cancer Collaboration IMPORTANCE The Global Burden of Diseases, Injuries, and Risk Factors Study 2019 (GBD 2019) provided systematic estimates of incidence, morbidity, and mortality to inform local and international efforts toward reducing cancer burden. OBJECTIVE To estimate cancer burden and trends globally for 204 countries and territories and by Sociodemographic Index (SDI) quintiles from 2010 to 2019. EVIDENCE REVIEW The GBD 2019 estimation methods were used to describe cancer incidence, mortality, years lived with disability, years of life lost, and disability-adjusted life years (DALYs) in 2019 and over the past decade. Estimates are also provided by quintiles of the SDI, a composite measure of educational attainment, income per capita, and total fertility rate for those younger than 25 years. Estimates include 95% uncertainty intervals (UIs). FINDINGS In 2019, there were an estimated 23.6 million (95% UI, 22.2-24.9 million) new cancer cases (17.2 million when excluding nonmelanoma skin cancer) and 10.0 million (95% UI, 9.36-10.6 million) cancer deaths globally, with an estimated 250 million (235-264 million) DALYs due to cancer. Since 2010, these represented a 26.3% (95% UI, 20.3%-32.3%) increase in new cases, a 20.9% (95% UI, 14.2%-27.6%) increase in deaths, and a 16.0% (95% UI, 9.3%-22.8%) increase in DALYs. Among 22 groups of diseases and injuries in the GBD 2019 study, cancer was second only to cardiovascular diseases for the number of deaths, years of life lost, and DALYs globally in 2019. Cancer burden differed across SDI quintiles. The proportion of years lived with disability that contributed to DALYs increased with SDI, ranging from 1.4% (1.1%-1.8%) in the low SDI quintile to 5.7% (4.2%-7.1%) in the high SDI quintile. While the high SDI quintile had the highest number of new cases in 2019, the middle SDI quintile had the highest number of cancer deaths and DALYs. From 2010 to 2019, the largest percentage increase in the numbers of cases and deaths occurred in the low and low-middle SDI quintiles. CONCLUSIONS AND RELEVANCE The results of this systematic analysis suggest that the global burden of cancer is substantial and growing, with burden differing by SDI. These results provide comprehensive and comparable estimates that can potentially inform efforts toward equitable cancer control around the world.
Additional file 1: Relative search volumes in the provinces of Iran from 2016 to 2019.
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Papers by Erfan Shamsoddin