Please select the eligibility criteria that correspond to the clinical trial below.
Title: Efficacy of an Internet-based Guided Self-help Training for Chronic Tinnitus: A Randomized Controlled Trial
Brief Summary: The purpose of this study is to determine the efficacy of a cognitive behavioral guided self-help training provided via the internet on tinnitus distress in a German sample.


Options:
A: Inclusion Criteria

Participant's eligibility for the study is as follows:

1. Aged 18 years and over living in the UK
2. The ability to read and type in English
3. No barriers to using a computer (e.g. significant fine motor control or visual problems)
4. Internet and e-mail access, and the ability to use these
5. Commitment to completing the programme
6. Completion of the online screening and outcome questionnaires
7. Agreeing to participate in either group and be randomized to one of these groups
8. Understanding and working towards the end goal of reducing the impact and distress of tinnitus, although the strength of the tinnitus may remain the same
9. Be available for 12 months after starting the study to complete a 1 year follow-up questionnaire
10. Suffering with tinnitus for a minimum period of 3 months
11. Tinnitus outcome measure scores indicating the need for tinnitus care (26 or above on the Tinnitus Functional Index)

Exclusion Criteria

1. Reporting any major medical or psychiatric conditions
2. Reporting pulsatile, objective or unilateral tinnitus, which have not been investigated medically
3. Tinnitus as a consequence of a medical disorder, still under investigation
4. Undergoing any tinnitus therapy concurrently to partaking in this study
B: Inclusion Criteria:

* Tinnitus type: chronic, subjective, non - pulsatile tinnitus
* Duration of tinnitus = more than 3 months
* Minimum age of the patient is 18 years old - maximum age is 75 years old
* Tinnitus Functional Index (TFI) score ≥ 25 - \< 90
* Stable use of medication during therapy

Exclusion Criteria:

* HADS - score: anxiety and depression-subscores \> 15
* HQ - score \> 40
* Objective, pulsatile tinnitus
* Active middle ear pathology
* Neurological and psychiatry co-morbidity for which currently psychotherapy is ongoing
* Psychosis, schizophrenia, epilepsy
* Pregnancy
C: Inclusion Criteria:

* Age of at least 18 years
* Chronic tinnitus for at least 6 months
* Medical examination of tinnitus by an ear, nose and throat physician (ENT)
* Scoring 38 or above on the Tinnitus Handicap Inventory (THI) or scoring 13 or above on the Mini-Tinnitus Questionnaire (Mini-TQ)
* Not currently receiving psychological treatment for tinnitus
* Being able to access the Internet and print instructions
* Sufficient knowledge of the German language to read and follow the Internet-based self-help program

Exclusion Criteria:

* Tinnitus caused by any other general medical condition or otologic disease (e.g., active Meniere's Disease)
* Clinical diagnosis of any severe mental disorder (especially a severe depressive disorder, suicidality, acute psychosis)
* Clinical diagnosis of Dementia or another severe organic cerebral disorder
* Clinical diagnosis of substance-related addiction/abuse
D: Inclusion Criteria:

* 100 subjects with distressing and chronic tinnitus (for at least 6 month)
* age: 16-75 years
* sufficient language skills

plus

* 50 healthy control-subjects
* without tinnitus or other hearing disease

Exclusion Criteria (for both):

* tinnitus as a result of medical disease (e.g.Meniere's disease)
* attendance in the previous study
* psychosis or dementia

Answer: C