Other Terms used in a trial:

EQ-5D: This is a way of measuring the health of the patient, and doctors use it to look at the quality of life, covering things such as patient mobility, self-care, daily activities, pain/discomfort, and anxiety/depression. 

Rome III: This is a standard tool to diagnose patients with gastrointestinal disorders, such as IBS.   It uses a number of criteria based on symptoms to establish whether an individual can be diagnosed with a condition where there is no current laboratory test that can used, for example a blood test or colonoscopy because the condition has no physical signs.

SF-36: This is another survey similar to EQ-5D in that it measures health.  It is a (reasonably) short form of 36 questions which again covers quality of life.

Placebo: A placebo is something that seems to be a ‘real’ medical treatment-but actually isn’t. It could be a drug or some other treatment. What all placebos have in common is that they do not have the active ingredient meant to affect health , and they can be designed to appear very like the treatment being tested. Researchers use placebos to help them understand what effect a new drug or treatment might have on a health condition. Then by comparing people’s responses to the placebo and to the treatment being tested, researchers can tell whether the treatment is having any real benefit