Table 2 Mean hearing thresholds authentic TENS cohort

Freq (Hz)

Sham TENS trial 1

Authentic TENS trial 2

p value

Sham TENS trial 1

Authentic TENS trial 2

p value

125

6.9 (2.5)

6.9 (2.5)

1

7.1 (2.5)

6.9 (2.5)

0.76

250

10 (0)

10 (0)

1

10 (0)

10 (0)

1

500

20 (2.7)

19.0 (2.6)

0.25

19.5 (3.5)

19.3 (3.3)

0.82

1000

15.7 (1.8)

14.8 (1.1)

0.04

16.4 (2.3)

15.5 (2.2)

0.18

2000

18.3 (2.9)

17.4 (3.0)

0.30

18.1 (3.7)

17.4 (3.8)

0.54

4000

20.2 (8.9)

18.8 (8.4)

0.59

17.9 (4.4)

18.3 (4.8)

0.74

8000

11.4 (7.1)

10.2 (6.2)

0.57

8.1 (3.7)

8.3 (2.9)

0.82