Reference no: EM132432456

A study show that low intensity vibration therapy to reduce his pain levels and patience with fibromyalgia. During each session in the study, vibration pads replaced on the pain site indicated by the patient. Pain reduction was measured through self reporting after each session.

Another study is being designed to examine whether low intensity vibration therapy also reduces pain in patient suffering from ruptured discs in the lumbar region of the back. 300 male patients are subjects in the new study.

Part A: What is an appropriate design for the new study? Include treatments use, method of treatment assignment, and variables that Phould be measured.

Part B: If the study consisted of 150 male and 150 female patients instead of 300 male patients, would you change the study design? If so, how would you modify your design? If not, why not?

Part C: Could your design be double blind? Explain.