His Confidence interval research extends to Internal medicine, which is thematically connected. His research on Confidence interval often connects related areas such as Internal medicine. He connects Physical therapy with Physical medicine and rehabilitation in his study. Derek G Cook integrates Physical medicine and rehabilitation and Surgery in his studies. As part of his studies on Surgery, Derek G Cook often connects relevant subjects like Cluster randomised controlled trial. Derek G Cook regularly ties together related areas like Intervention (counseling) in his Cluster randomised controlled trial studies. Many of his studies involve connections with topics such as Nursing and Intervention (counseling). Derek G Cook integrates Nursing with Physical therapy in his research. In his study, Derek G Cook carries out multidisciplinary Randomized controlled trial and Clinical trial research.