Skip to main content

Table 1 Characteristics of the final analysis set by country

From: Measuring subjective complaints of attention and performance failures - development and psychometric validation in tinnitus of the self-assessment scale APSA

Characteristics   US Germany Mexico Total
All subjects at baseline N 116 59 38 213
Sex,% Male 52.6 57.6 31.6 50.2
  Female 47.4 42.4 68.4 49.8
Age at baseline (years) Mean (SD) 50.9 (7.1) 46.0 (8.3) 45.1 (9.4) 48.5 (8.3)
Educational Level in% Less than 10 years of education 3.5 37.3 47.4 20.9
  10 or more years of education without a university degree 45.6 44.1 26.3 41.7
  University degree 50.9 18.6 26.3 37.4
When did tinnitus start?, in% <1 year ago 16.8 30.5 50.0 26.7
  >1 to 3 years ago 26.6 18.6 34.2 25.7
  >3 to 5 years ago 13.3 17.0 5.3 12.9
  >5 to 10 years ago 19.5 17.0 5.3 16.2
  >10 years ago 23.9 17.0 5.3 18.6
Is your tinnitus always present? in% Permanent without interruptions 81.6 81.4 62.2 78.1
  With short breaks (<1 hour) 10.5 3.4 24.3 11.0
  With long breaks (>1 hour) 7.9 15.3 13.5 11.0
THI-12 total at baseline Mean (SD) 11.3 (5.1) 11.5 (6.0) 10.4 (4.6) 11.2 (5.3)
HADS Depression Mean (SD) 4.0 (3.2) 6.5 (4.5) 5.8 (3.0) 5.0 (3.7)
HADS Anxiety Mean (SD) 7.4 (3.5) 9.0 (4.3) 5.6 (3.9) 7.5 (4.0)