Patient Information Resources

Centre for Orthopaedics
Suite 10-33/34/35 Mount Elizabeth Novena Specialist Centre
38 Irrawaddy Road
Singapore, 329563, Singapore
Ph: (65) 6684 5828
Fax: (65) 6684 5829

Child Orthopedics
Pain Management
Spine - Cervical
Spine - General
Spine - Lumbar
Spine - Thoracic

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Is it possible that some medications are not being approved because some people are non-responders versus the drug not being beneficial?

Yes, because a drug may be beneficial to a small proportion of people who are responders, present study designs may dilute results due to the non-responders. The authors of a recent study suggest the use of a study design called enriched enrolment with randomised withdrawal, EERW. In this study design, subjects are tried on a drug first, and only those who have a positive response are then randomised to study it further.


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