Hassett 2007.

Trial name or title	A Computer‐Based Intervention for Medically Unexplained Physical Symptoms
Methods	Randomised controlled trial
Participants	Participants aged 18‐75 seeking medical care for physical symptoms (i.e., persistent fatigue, pain complaints, and gastrointestinal, cardiovascular or musculoskeletal symptoms). No major medical illness to explain symptom(s) is found after detailed physical and laboratory assessment. Participants with common disorders such as hypertension, asthma, diabetes, low back strain, etc., will be included if in the opinion of the physician the presenting physical symptoms are not due to the underlying disorder. In order to enter the study, participants must meet criteria for at least 4 medically unexplained symptoms out of the 42 somatic symptoms listed in the Composite International Diagnostic Interview (CIDI) rated as currently present if males and at least 6 symptoms if females (Escobar's abridged criteria). Participants without ready access to a computer and the Internet will be excluded from participating. Also excluded will be individuals with life threatening medical illness, communicative disorder, lack of fluency in English, illiteracy, and major psychiatric conditions including psychoses, bipolar disorder, and alcohol or drug abuse. Participants will be required to add no medications to their regimen during the study period (approximately 6 weeks)
Interventions	Intervention: Computer‐based exercises to be executed at home Comparator: Sham computer‐based exercises to be executed at home
Outcomes	Quick Inventory of Depressive Symptoms Positive and Negative Affect Scale Satisfaction with Life Scale
Starting date	2007
Contact information	afton@med.umich.edu
Notes	ClinicalTrials.gov identifier: NCT00468013 According to trial register completed in 2009. Contacted investigator (17 July 2014)