PURPOSE: This workshop will be to present information on a fledgling administrative database in the Southeast Asian region, the Casemix system, used in Indonesia, Philippines, and Malaysia. Participants will also be made familiar similarities and differences of the data in each country and how the dataset can be used as real-world evidence. DESCRIPTION: Administrative databases are relatively new in the Southeast Asian region. The Casemix system developed by the National University of Malaysia has been implemented in the three countries in Southeast Asia. Due to health system differences, the information obtained from the database could differ. Speakers will cover content related to (i) how the database is used from an administrative perspective, (ii) what are the data variables in the Casemix system, (iii) how the type of data collected varies in the three countries due to health system differences, (iv) strengths and limitations of the data and (v) how the Casemix data can be used to answer pertinent research questions. Dr. Soraya Azmi will present information about the content of the Casemix dataset and how it is collected in each country. Dr. Amrizal Muhd Nur will highlight differences between datasets from each country and discuss strengths and limitations of the dataset. Mr. Adrian Goh will address how the dataset, representing real-world evidence, can be used to answer health economic and outcomes research questions. Professor Syed Aljunid will elicit questions and comments from the audience regarding their experience with administrative databases in the region. Since databases like this are relatively rare and a novelty in the Southeast Asian region, workshop will be useful for participants who are interested in discussing the opportunities and challenges posed by the Casemix data and other new data sources like it.