Tehran University Medical Journal

Background: One of the most important criteria of the development of countries at the national and international levels is the survey of scientific productions indexed in authentic databases. This study aimed to analyze the scientific productions by Iranian researchers on gastroenterology and hepatology in the Web of Science (WOS) database.
Methods: This applied study used a scientometric approach to review the scientific productions by Iranian researchers on gastroenterology and hepatology in the WOS database. Therefore, the total number of scientific documents related to the category of gastroenterology and hepatology, Iran, and other countries were recovered. The time frame was until the end of 2017. Data were collected in April 2018. This research was conducted at the Clinical Research Unit in Afzalipour Medical Center in Kerman, Iran.
Results: The results showed that during 1983 to 2017, the total number of 2180 scientific productions (0.31%) on gastroenterology and hepatology were published in Iran, ranking the country 34th in the world. Compound annual growth rate (CAGR) in Iranian scientific publications was 9.5%. The «Tehran University of Medical Sciences» was identified as the most productive center in gastroenterology and hepatology field with a contribution rate of 35.69%. The results also showed that the most international collaboration of Iranian researchers on gastroenterology and hepatology field was with the United States of America (USA) scientific centers (5.82%). Most articles in the field of gastroenterology and hepatology (26.69%) were published in the «Hepatitis Monthly» journal. Most scientific productions in this field were related to the microbiology. The majority of scientific productions on gastroenterology and hepatology field were published in the form of article. Most scientific productions by Iranian researchers on gastroenterology and hepatology in the Web of Science (WOS) database were in English language.
Conclusion: Results showed that although compound annual growth rate (CAGR) in Iranian gastroenterology and hepatology publications was high rather than gastroenterology and hepatology scientific productions CAGR in the world, it’s not satisfying. Most articles have published in journals with low impact factor. Therefore, we should resolve the problems and increase the scientific level of researches.

Results: In the group of children with tic disorders, the highest number of patients were girls and in the group of children who were healthy, the highest number of patients were girls. The average age of patients in the case group was 10.37±0.31 years old and the average age of patients in the control group was 10.06±0.41 years old. The average age difference between the children with tic disorders and healthy children was not statistically significant (P=0.971). The average body mass index (BMI) in the case group was 16.98±0.35 and the average BMI in the control group was 16.0±84.56. The average body mass index difference between the children with tic and healthy children was not statistically significant (P=0.838). The mean serum Vit 25(OH) D3 levels in the control group were higher than the average serum level of vitamin D in the case group. The mean serum vitamin D level difference between the children with tic disorders and healthy children was statistically considerable (P=0.036). Conclusion: The results showed that the average serum level of vitamin D in children with tic disorders was significantly lower than in children who were healthy. To investigate and confirm this relationship, more long-term studies with a larger number of patients are needed.