Table 1 Mean hearing thresholds sham TENS cohort

Freq (Hz)

Sham TENS trial 1

Sham TENS trial 2

p value

Sham TENS trial 1

Sham TENS trial 2

p value

125

6.8 (3.8)

6.3 (3.7)

0.67

7.6 (3.9)

5.8 (1.9)

0.07

250

11.1 (4.6)

10.8 (3.4)

0.84

10 (0)

9.7 (1.1)

0.32

500

20.5 (5.2)

19.2 (4.5)

0.41

19.2 (3.4)

18.9 (2.7)

0.79

1000

16.8 (7.1)

16.3 (7.4)

0.82

14.7 (2.6)

15.3 (2.0)

0.49

2000

18.2 (3.8)

17.4 (3.9)

0.53

15.8 (3.0)

16.1 (2.1)

0.76

4000

19.5 (7.6)

17.1 (7.5)

0.34

18.7 (5.5)

17.6 (5.9)

0.57

8000

10.3 (8.1)

9.5 (8.5)

0.77

9.5 (8.2)

10.5 (8.2)

0.69