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Characteristics of Oncology Clinical Trials Insights From a Systematic Analysis of ClinicalTrials.gov
Characteristics of Oncology Clinical Trials Insights From a Systematic Analysis of ClinicalTrials.gov JAMA INTERNAL MEDICINE Hirsch, B. R., Califf, R. M., Cheng, S. K., Tasneem, A., Horton, J., Chiswell, K., Schulman, K. A., Dilts, D. M., Abernethy, A. P. 2013; 173 (11): 972–79Abstract
Clinical trials are essential to cancer care, and data about the current state of research in oncology are needed to develop benchmarks and set the stage for improvement.To perform a comprehensive analysis of the national oncology clinical research portfolio.All interventional clinical studies registered on ClinicalTrials.gov between October 2007 and September 2010 were identified using Medical Subject Heading terms and submitted conditions. They were reviewed to validate classification, subcategorized by cancer type, and stratified by design characteristics to facilitate comparison across cancer types and with other specialties.Of 40 970 interventional studies registered between October 2007 and September 2010, a total of 8942 (21.8%) focused on oncology. Compared with other specialties, oncology trials were more likely to be single arm (62.3% vs 23.8%; P < .001), open label (87.8% vs 47.3%; P < .001), and nonrandomized (63.9% vs 22.7%; P < .001). There was moderate but significant correlation between number of trials conducted by cancer type and associated incidence and mortality (Spearman rank correlation coefficient, 0.56 [P = .04] and 0.77 [P = .001], respectively). More than one-third of all oncology trials were conducted solely outside North America.There are significant variations between clinical trials in oncology and other diseases, as well as among trials within oncology. The differences must be better understood to improve both the impact of cancer research on clinical practice and the use of constrained resources.
View details for DOI 10.1001/jamainternmed.2013.627
View details for Web of Science ID 000320050200008
View details for PubMedID 23699837