The key characteristics and benefits of the ODQ (based on results acquired during development) are:
Completion of the questionnaire by patients was extremely high with 96% completing the instrument on 3 separate occasions (weeks 0, 1 and 4)
The ODQ has high construct validity with four dimensions (reduction in positive emotions; general reduction in emotions; not caring; and emotional detachment) being represented in the ODQ. In addition, items in the ODQ demonstrate close relationships to contents of other scores measuring emotional blunting.
Sensitivity to change
When compared to a “gold standard” question (relating to the participant’s experience of emotional side-effects) the ODQ appears to be sensitive to change.
The ODQ has high reliability, both in terms of internal reliability (items within each construct were highly correlated) and test-retest reliability.
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