A prospective study was carried out to examine the degree to which a standard voice assessment could discriminate between the potential benefits of two different voice therapy programmes for individual patients. The study encompassed 200 dysphonia subjects who were referred for voice therapy and had completed treatment within a prescribed two-year period. A standard assessment procedure was carried out on first attendance for each patient and guidelines were used to assign patients to different treatment programmes on the basis of the assessment results. The assessment discriminated well between patients requiring voice therapy to change physiological parameters of voice usage and patients able to self adjust voice usage, and provided an objective means of measuring outcomes.
