Comparison 18. HLPP vs non‐exposed workers (long‐term 1‐year follow‐up).

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 hearing loss STS	1		Risk Ratio (Random, 95% CI)	3.38 [1.23, 9.32]
1.1 low‐exposed engineers	1		Risk Ratio (Random, 95% CI)	2.07 [0.27, 15.99]
1.2 medium‐exposed infantry	1		Risk Ratio (Random, 95% CI)	2.82 [0.37, 21.57]
1.3 high‐exposed artillery	1		Risk Ratio (Random, 95% CI)	4.69 [1.13, 19.51]