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Factor-analysis investigations of two existing devices designed to assess the effects and handicaps associated with tinnitus-the THQ and the TEQ-were conducted with an Australian sample of distressed tinnitus patients. The results indicated that both the THQ and the TEQ have good test-retest reliability and internal consistency. The factorial structure of the THQ is well captured by a three-factor solution: Its major constituents are (1) Emotional, social, and physical effects of tinnitus; (2) hearing acuity and communications; and (3) appraisal of tinnitus. This factorial structure is similar to the one reported by Kuk et al. [2] for a sample of US tinnitus patients. A five-factor solution of the TEQ was presented, demonstrating that the first two factors tended to reflect distress; the former reflected this in terms of the emotional and cognitive responses to tinnitus and the latter in terms of the unpleasantness and intrusiveness of the noises. A third factor reflected auditory perceptual difficulties, and the fourth reflected sleep disturbance. The final factor was less easily interpretable, but some items reflected somatic or physical complaints. Overall, the results obtained with an Australian sample of tinnitus patients yielded similar findings to the work conducted in the United Kingdom and Germany. Apparently, both the THQ and TEQ tend to measure a number of different dimensions of response to tinnitus. Both measures would be justified as subject-selection devices or measures of the effectiveness of treatments. The TEQ would engender strong support for the reporting of subscale results rather than of the total score. The TRQ, although highly correlated with the total scores of the THQ and the TEQ, can be regarded as a more homogeneous scale, measuring a single general factor of distress. Judging from the higher correlation between the THQ and the TEQ-auditory perceptual subscale, the THQ appears to reflect an individual's more general auditory-perceptual difficulties than would either the TEQ itself or the TRQ. All three scales are likely to be far superior to simple visual analog scales presently not understood well in terms of psychometric properties.
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