Table 2 Mean SRI for each ear in workers with occupational and environmental noise exposure according to audiometry
Environmental noise | Hearing Loss | |||||
|---|---|---|---|---|---|---|
(n 90) | ||||||
Age groups | ||||||
20-41 | 42-51 | 52-85 | ||||
Mean (S.D.) | SRI RE | SRI LE | SRI RE | SRI LE | SRI RE | SRI LE |
87,64 | 89,16 | 81,96 | 85,92 | 83,69 | 85,79 | |
(18,68) | (16,08) | (19,70) | (19,81) | (16,86) | (14,76) | |
Normal Hearing | ||||||
(n 40) | ||||||
Age groups | ||||||
20-41 | 42-51 | 52-85 | ||||
Mean (S.D.) | SRI RE | SRI LE | SRI RE | SRI LE | SRI RE | SRI LE |
98,48 | 97,52 | 97,78 | 97,33 | 97,60 | 96,40 | |
(2,96) | (4,29) | (2,91) | (6,63) | (3,86) | (5,15) | |
Occupational noise | Hearing Loss | |||||
(n 269) | ||||||
Age groups | ||||||
20-41 | 42-51 | 52-85 | ||||
Mean (S.D.) | SRI RE | SRI LE | SRI RE | SRI LE | SRI RE | SRI LE |
89,33 | 89,85 | 86,59 | 85,07 | 80,03 | 83,41 | |
(15,63) | (12,08) | (15,44) | (16,42) | (17,21) | (15,43) | |
Normal Hearing | ||||||
(n 69) | ||||||
Age groups | ||||||
20-41 | 42-51 | 52-85 | ||||
Mean (S.D.) | SRI RE | SRI LE | SRI RE | SRI LE | SRI RE | SRI LE |
92,02 | 92,93 | 96,00 | 96,84 | 96,00 | 96,00 | |
(20,38) | (20,75) | (3,77) | (4,13) | (4,62) | (5,66) | |