Tinnitus assessment by means of standardized self-report questionnaires: Psychometric properties of the Tinnitus Questionnaire (TQ), the Tinnitus Handicap Inventory (THI), and their short versions in an international and multi-lingual sample

Table 10 Change sensitivity

PGI-C	Improved			Unchanged			Worsened
Questionnaire	n	Mean change (last - base)	SRM	n	Mean change (last - base)	SRM	n	Mean change (last - base)	SRM
THI
- total	126	14.46	0.89	136	3.25	0.26	61	−3.25	0.30
- German	61	9.57	0.80	109	1.50	0.13	55	−3.67	0.35
- Dutch	5	8.00	0.93	7	3.71	0.45	4	-	-
- Portuguese	58	20.34	1.09	19	13.37	1.05	1	-	-
- Spanish	2	-	-	1	-	-	1	-	-
TBF12
- total	116	2.74	0.71	132	0.23	0.08	61	−1.34	0.36
- German	59	2.05	0.59	111	0.18	0.06	55	−1.56	0.44
- Dutch	6	2.00	1.00	7	0.71	0.21	4	-	-
- Portuguese	50	3.62	0.84	13	0.46	0.11	1	-	-
- Spanish	1	-	-	1	-	-	1	-	-
TQ
- German	86	8.72	1.04	138	0.96	0.11	71	−3.89	0.38
Mini-TQ
- German	85	2.36	0.95	137	0.29	0.11	70	−0.80	0.30
TQ 12
- German	83	2.83	0.94	135	0.27	0.09	70	−1.0	0.29

PGI-C: Patient Global Impression-Change categorized into 3 groups (improved, unchanged and worsened).
Mean change (last-base): Positive values mean improvement of tinnitus complaints.
SRM: Absolute values of Standardized Response Mean (mean score changes divided by the standard deviation of the change, SD data not shown). Classification according to Cohen: ≈0.2 small, ≈0.5 moderate, >0.8 large change.
For group sizes <5 neither mean change nor SRM was calculated.

ISSN: 1477-7525