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Evaluation of hearing handicap in textile mill employees with noise induced hearing loss

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Abstract

Objective

To calculate héaring handicap in textile mill employees with noise induced hearing loss.

Design

Cross-sectional study.

Setting

Model Mills, Nagpur and Govt. Medical College, Nagpur.

Participants

77 employees with noise induced hearing loss.

Study Variables

Noise levels (by sound level meter), Noise Induced Hearing Loss (by audiometry), Hearing handicap (AAOO guidelines).

Statistical Analysis

Chi square test, Odds ratios, ANOVA.

Results

NIHL was significantly higher (76.6%) in employees exposed to >85 dB(A) than to 70-85 dB(A) (35.2%) and to <70 dB(A) (10.7%) (x2=60.6, df=2, p<0.001). Hearing handicap in employees with NIHL increased in severity as the noise level increased. Average hearing handicap was significantly higher (12.5%) in >85 dB(A) exposure group than 70-85 dB(A) (7.9%) and <70 dB(A) (4.9%) exposure groups (F=5.17, p <0.05). The risk of having hearing handicap >10% was 5.2 times higher in > 85 dB(A) exposure group than in <85 dB(A) exposure group (OR = 5.22, 95% C.I. 1.76-15.44).

Conclusion

One third of textile mill employees had hearing handicap. Noise levels >85 dB(A) are associated with high proportion as well as greater severity of hearing handicap.

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Authors and Affiliations

  1. Preventive and Social Medicine Government Medical College, Nagpur M.S

    Ruikar M. M., Motghare D. D. & Vasudeo N. D.

Authors
  1. Ruikar M. M.
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  2. Motghare D. D.
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  3. Vasudeo N. D.
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Ruikar, M.M., Motghare, D.D. & Vasudeo, N.D. Evaluation of hearing handicap in textile mill employees with noise induced hearing loss. IJO & HNS 49, 97–100 (1997). https://doi.org/10.1007/BF03023782

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