Development en validation of the 'Yale-Brown Obsessive Compulsive Scale for Body Dysmorphic Disorder Self Rating version' (Y-BOCS BDD-SR)

The standardised interview Y-BOCS-BDD is an internationally used instrument to
determine the severity of Body Dismorphic Disorder (Phillips, 1997). The YBOCS
modified for BDD (Phillips, 1997 52 /id) has become the gold standard for
assessing outcome of treatment in randomised controlled trials (Veale, 2003).
Validity and reliability of the American version is good (Philips 1997).
In the Netherlands we use a translation of the original standardised interview
(Van Rood, Bouman, 2001). Recent analysis of the dutch version ( Van Rood en
Bouman (2007)) show equally good qualities.
The De Y-BOCS-BDD questionaire is based on the original American interview. The
version is reviewed by Veale and Philips and their comments have been used to
improve the questionaire.

This study will determine whether the *Yale-Brown Obsessive-Compulsive Scale
modified for Body Dysmorphic Disorder (Y-BOCS-BDD) interview* can be replaced
by a questionaire (self-rating (SR)).

Observational reseach using a questionnaire and interview

The burden associated with participation is restricted the time needed to fill
in the questionnaire and being interviewed. The total burden for the patient
will be 50 to 150 minutes during a 12 month period. There will be no financial
compensation for the time invested. There are no risks associated with
participation.
There are no direct benefits for participants, but in the future the new
questionaire could mean a lesser burden for new participants of ROM because the
questionaire takes far less time.