PURPOSE:Collaborative research improves efficiency and quality of clinical investigation. As globalization increases, the facilitation for the dispersion of information seems to lead to an increase in collaborative scientific research. Few studies have demonstrated this increase. We aimed to evaluate collaborative research tendency in the last decade.
METHODS:We analyzed the number of collaborative studies and its characteristics of two respiratory medicine journals. All original articles published in Chest and Brazilian Journal of Pulmonology (BJP) in two different moments (1997 and 2007) were evaluated. Collaborative studies were defined as original articles with the participation of two or more institutions, whether in the same country or not. Multicentric trials were defined when the same protocol was applied in more than one institution.
RESULTS:There were 366 original articles published in Chest and 20 in BJP during 1997. In 2007, 377 studies were published in Chest and 70 in BJP. There was an increase in the participation of collaborative studies in Chest from 29 to 42.4% (p<0.001) and from 10 to 35.5% (p=0.017) in BJP. In Chest, there was no difference in international collaboration (9.3 vs 7.9%, respectively 1997 and 2007; p=ns), although there was a tendency of increase in multicentric studies (7.3 vs 11.1; p=0.10).
CONCLUSION:We demonstrated that there was an important increase in collaborative research in both periodics. This may represent a world tendency of improvement in research quality even in less impact journals of development countries. However, international collaborative studies are still infrequent and not increasing.
CLINICAL IMPLICATIONS:International collaborative research should be encouraged by research support agencies and professional medical societies.
DISCLOSURE:Rodrigo Athanazio, No Financial Disclosure Information; No Product/Research Disclosure Information