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Detailed information about tinnitus was obtained from over 1800 patients attending a tinnitus clinic. Patients rated their tinnitus severity on a scale from 1 to 10 and also provided information concerning the quality, duration, localization, and other attributes of their tinnitus. In addition to standard audiometric tests, patients received tests for tinnitus pitch, loudness, maskability, and residual inhibition, and provided a brief medical history. The severity ratings of over 90% were at or above the scale value of 5. There was no correlation between rated severity and the loudness of tinnitus (obtained by a loudness balance procedure using external sounds matching the tinnitus pitch), thus confirming earlier observations. The severity also was not related to the type, quality, or pitch of tinnitus sound heard. However, severity ratings were highly correlated with incidence of sleep disturbance. Additional observations concerning relationships between perceived severity and other patient characteristics are discussed.
Meikle et al. (Sat,) studied this question.