Comparison 7. HPD (various) noise attenuation (immediate).

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Noise attenuation (dB)	1	36	Mean Difference (IV, Fixed, 95% CI)	0.0 [0.0, 0.0]
1.1 Peltor H61 Muff Elec	1	6	Mean Difference (IV, Fixed, 95% CI)	0.0 [0.0, 0.0]
1.2 Peltor H7 Muff Elec	1	6	Mean Difference (IV, Fixed, 95% CI)	0.0 [0.0, 0.0]
1.3 Peltor H6 Muff Elec	1	6	Mean Difference (IV, Fixed, 95% CI)	0.0 [0.0, 0.0]
1.4 Bilsom Marksman Muff Elec	1	6	Mean Difference (IV, Fixed, 95% CI)	0.0 [0.0, 0.0]
1.5 Silenta Hunter Muff Elec	1	6	Mean Difference (IV, Fixed, 95% CI)	0.0 [0.0, 0.0]
1.6 EAR Ultra 9000 Plug	1	6	Mean Difference (IV, Fixed, 95% CI)	0.0 [0.0, 0.0]