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. 2013 Nov 8;2:595. doi: 10.1186/2193-1801-2-595

Table 8.

Categories with positive and negative keywords in records with a tinnitus with/without masker

Positive keywords Negative keywords
Age < =55 * *
Not found Not found
Age > 55 * *
Not found Not found
Tinnitus without masker ** **
counsel, tinnitu Not found
*** ***
Not found Not found
**** ****
2107 N8
Tinnitus with masker ** **
masker counsel, tinnitu
*** ***
Not found BTE
**** ****
N8 2107
Male * *
Not found Not found
Female * *
Not found Not found