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Table 2 Numbers of studies excluded per diagnostic group and reasons for exclusion. Each column represents a different symptom category

From: Questionnaires in otology: a systematic mapping review

  Tinnitus Vertigo Hearing loss Multiple complaint Dysgeusia Itch
No development/validation paper 13 15 34 3 - -
Open-ended question(s) 7 2 25 - - -
Q not self-administered 1 3 3 1 - -
No description of development/validation in OA 4 6 19 3 3 1
No definitive Q presented 1 - - - - -
Off-topic 1 11 15 2 - -
No English translation 3 2 3 - - -
No Q availability 1 6 12 1 - -
Pediatric Q - - 8 5 - -
Not a Q 1 3 8 - - -
1-item Q 3 3 1 - - -
Double Q 9 10 11 - - -
Semi-structured Q - - 2 - - -
Total (n = 265) 44 61 141 15 3 1
  1. Q questionnaire, OA original article. See also Fig. 1, Search 2, exclusions [3] and [4]