NIDCD 2009.

Trial name or title	'Randomized trial of Tinnitus Retraining Therapy'
Methods	Randomised, single‐blind (subject), parallel assignment
Participants	Both sexes aged 18 years and older
Interventions	Group 1: Counselling plus everyday noise type 1 Group 2: Counselling plus static noise type 2 Group 3: Counselling plus static noise type 3 Group 4: Hearing aid and counselling plus everyday noise type 1 Group 5: Hearing aid and counselling plus static noise type 2 Group 6: Hearing aid and counselling plus static noise type 3
Outcomes	Primary outcome measures: Iowa Tinnitus Handicap Questionnaire Secondary outcome measures: tinnitus measures
Starting date	January 2004
Contact information	Principal investigator: Richard S Tyler, Ph.D, University of Iowa
Notes	—