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Table 1 Overview of the standardized content of a CRF used for pharmacological studies according to the consensus. Measurements at each visit are graded according to essential to collect (A) or highly recommended (B).

From: The Tinnitus Research Initiative (TRI) database: A new approach for delineation of tinnitus subtypes and generation of predictors for treatment outcome

  Screening Baseline Week 2 Week 4 Week 8 Week 12 = End Week 16 Follow up
TSCHQ A       
Otological Examination A       
Medical history A       
Audiometry A A     B  
Loudness match   B     B  
Pitch match   B     B  
Maskability   B     B  
Residual Inhibition   B     B  
THI A A A A A A A
TBF 12 B B B B B B B
Tinnitus Numeric Rating Scales A A A A A A A
BDI B B B B B B B
WHOQOL B B B B B B B
CGI (change)    A A A A A
Concomittant medication A A A A A A A
Adverse Events    A A A A A
Comorbidity A A A A A A A