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. 2014 Feb 25;9(2):e89904. doi: 10.1371/journal.pone.0089904

Table 1. Patient characteristics.

Groups Age1[years] Tinnitusfrequency2 [Hz] Tinnitusduration1 [years] General psychopathologicaldistress1 [SCL-90-R3] Depression1[ADS-L4] State anxiety1[STAI5]
Anodal tDCS 6 (N = 10) 42.90 (6.87) 4440.28 (1.78) 10.70 (7.26) 36.90 (39.84) 8.00 (5.85) 36.50 (11.37)
Cathodal tDCS (N = 11) 44.45 (13.29) 4654.66 (1.34) 10.27 (11.33) 30.91 (25.11) 12.09 (7.46) 35.82 (8.53)
Sham tDCS (N = 11) 44.91 (9.92) 4119.98 (1.69) 5.82 (6.15) 28.27 (25.75) 7.45 (6.67) 37.18 (10.45)
1

Arithmetic mean (standard deviation).

2

Geometric mean (standard deviation in octaves).

3

Symptom Checklist 90 Revisited [57];

4

Allgemeine Depressionsskala, Langform [58];

5

State-Trait Anxiety Inventory [59].

6

Transcranial direct current stimulation.