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. 2017 Jul 7;2017(7):CD006396. doi: 10.1002/14651858.CD006396.pub4

Comparison 10. V‐51‐R plug versus EAR plug (immediate).

Outcome or subgroup title No. of studies No. of participants Statistical method Effect size
1 TTS at 0.5 kHz (Hearing loss before exposure ‐ after exposure ) 1 70 Mean Difference (IV, Random, 95% CI) 0.0 [0.0, 0.0]
1.1 After 8 minutes out of noise 1 18 Mean Difference (IV, Random, 95% CI) 0.0 [0.0, 0.0]
1.2 After 14.6 minutes out of noise 1 18 Mean Difference (IV, Random, 95% CI) 0.0 [0.0, 0.0]
1.3 After 20 minutes out of noise 1 17 Mean Difference (IV, Random, 95% CI) 0.0 [0.0, 0.0]
1.4 After 27.2 minutes out of noise 1 17 Mean Difference (IV, Random, 95% CI) 0.0 [0.0, 0.0]
2 TTS at 1 kHz (before exposure ‐ after exposure ) 1   Mean Difference (IV, Random, 95% CI) Subtotals only
2.1 After 8 minutes out of noise 1 18 Mean Difference (IV, Random, 95% CI) 0.0 [0.0, 0.0]
2.2 After 14.6 minutes out of noise 1 18 Mean Difference (IV, Random, 95% CI) 0.0 [0.0, 0.0]
2.3 After 20 minutes out of noise 1 17 Mean Difference (IV, Random, 95% CI) 0.0 [0.0, 0.0]
2.4 After 27.2 minutes out of noise 1 17 Mean Difference (IV, Random, 95% CI) 0.0 [0.0, 0.0]
3 TTS at 2 kHz (before exposure ‐ after exposure ) 1   Mean Difference (IV, Random, 95% CI) Subtotals only
3.1 After 8 minutes out of noise 1 18 Mean Difference (IV, Random, 95% CI) 0.0 [0.0, 0.0]
3.2 After 14.6 minutes out of noise 1 18 Mean Difference (IV, Random, 95% CI) 0.0 [0.0, 0.0]
3.3 After 20 minutes out of noise 1 17 Mean Difference (IV, Random, 95% CI) 0.0 [0.0, 0.0]
3.4 After 27.2 minutes out of noise 1 17 Mean Difference (IV, Random, 95% CI) 0.0 [0.0, 0.0]
4 TTS at 3 kHz (before exposure ‐ after exposure ) 1   Mean Difference (IV, Random, 95% CI) Subtotals only
4.1 After 8 minutes out of noise 1 18 Mean Difference (IV, Random, 95% CI) 0.0 [0.0, 0.0]
4.2 After 14.6 minutes out of noise 1 18 Mean Difference (IV, Random, 95% CI) 0.0 [0.0, 0.0]
4.3 After 20 minutes out of noise 1 17 Mean Difference (IV, Random, 95% CI) 0.0 [0.0, 0.0]
4.4 After 27.2 minutes out of noise 1 17 Mean Difference (IV, Random, 95% CI) 0.0 [0.0, 0.0]
5 TTS at 4 kHz (before exposure ‐ after exposure) 1   Mean Difference (IV, Random, 95% CI) Subtotals only
5.1 After 8 minutes out of noise 1 18 Mean Difference (IV, Random, 95% CI) 0.0 [0.0, 0.0]
5.2 After 14.6 minutes out of noise 1 18 Mean Difference (IV, Random, 95% CI) 0.0 [0.0, 0.0]
5.3 After 20 minutes out of noise 1 17 Mean Difference (IV, Random, 95% CI) 0.0 [0.0, 0.0]
5.4 After 27.2 minutes out of noise 1 17 Mean Difference (IV, Random, 95% CI) 0.0 [0.0, 0.0]
6 TTS at 6 kHz (before exposure ‐ after exposure) 1   Mean Difference (IV, Random, 95% CI) Subtotals only
6.1 After 8 minutes out of noise 1 18 Mean Difference (IV, Random, 95% CI) 0.0 [0.0, 0.0]
6.2 After 14.6 minutes out of noise 1 18 Mean Difference (IV, Random, 95% CI) 0.0 [0.0, 0.0]
6.3 After 20 minutes out of noise 1 17 Mean Difference (IV, Random, 95% CI) 0.0 [0.0, 0.0]
6.4 After 27.2 minutes out of noise 1 17 Mean Difference (IV, Random, 95% CI) 0.0 [0.0, 0.0]