Case study CHRONIC HEPATITIS CASE This is an observational multicenter study. Therapeutic area: infectious diseases, chronic viral hepatitis. In this project, only observational study services were provided by Data MATRIX. Special study questionnaires External data sources Study start dates and duration Requirements for the number of follow-up queries Several types of questionnaires for assessing quality of life of patients, treatment efficacy, etc. were added to the MATRIX EDC. Upon the customer’s request, the data from the questionnaires were entered into the MATRIX EDC via Data MATRIX operators. Independent double data entry was performed to prevent errors at this stage. In this case, the double data entry process is defined as the gold standard to ensure high quality of data. It

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