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Table 1 Sample characteristics for the whole group and statistical parameters (mean ± standard deviation)

From: Mindfulness-and body-psychotherapy-based group treatment of chronic tinnitus: a randomized controlled pilot study

  Intervention group Control group Statistics
n 18 18  
gender (male/ female) 11/7 8/10 χ2 = 1.0; df = 1; p = 0.317
age 49.6 ± 8.8 51.7 ± 16.0 t = 0.5; df = 34; p = 0.629
tinnitus duration 100.5 ± 119.1 142.3 ± 116.2 t = 1.1; df = 33; p = 0.300
number of previous treatments 3.4 ± 2.0 3.7 ± 2.1 t = 0.5; df = 33; p = 0.653
laterality (left, both/central, right) 6, 6, 5 8, 3, 7 χ2 = 1.6; df = 2; p = 0.451
Questionnaires    
Tinnitus Questionnaire 34.1 ± 15.8 37.4 ± 14.9 t = 0.7; df = 34; p = 0.512
Tinnitus Handicap Inventory 41.0 ± 20.4 45.9 ± 17.7 t = 0.8; df = 34; p = 0.448
Beck Depression Inventory 11.1 ± 8.1 11.8 ± 7.0 t = 0.3; df = 34; p = 0.793
Numeric rating scales    
loudness 5.7 ± 2.5 6.5 ± 2.2 t = 1.0; df = 34; p = 0.328
annoyance 7.2 ± 2.3 5.9 ± 3.0 t = 1.4; df = 33; p = 0.158
discomfort 6.9 ± 2.8 7.3 ± 2.3 t = 0.5; df = 34; p = 0.600
distractibility 6.2 ± 2.7 6.4 ± 2.7 t = 0.3; df = 34; p = 0.806
unpleasantness 5.9 ± 2.8 7.1 ± 2.2 t = 1.4; df = 34; p = 0.169
Other (no, yes)    
temporomandibular joint disorder 12, 5 14, 4 χ2 = 0.2; df = 1; p = 0.627
neck pain 7, 10 6, 12 χ2 = 0.2; df = 1; p = 0.631
other pain 10, 6 10, 8 χ2 = 0.2; df = 1; p = 0.681
influence of neck movement 12, 4 9, 9 χ2 = 2.2; df = 1; p = 0.134
psychiatric comorbidity 12, 5 14, 4 χ2 = 0.2; df = 1; p = 0.627