has part realized in realizes concretizes investigation worker role trial statistician role trial statistician trial statistician role CDISC definition: trial statistician. A statistician who has a combination of education/training and experience sufficient to implement the principles in the ICH E9 guidance and who is responsible for the statistical aspects of the trial. [ICH E9] Person:Jennifer Fostel a worker role that analyzes data obtained during a trial or study; this role occurs after the trial or study is completed or terminated. clinical study design metadata incomplete