Limits...
Noise Induced Hearing Loss in Iran: (1997-2012): Systematic Review Article.

Soltanzadeh A, Ebrahimi H, Fallahi M, Kamalinia M, Ghassemi S, Golmohammadi R - Iran. J. Public Health (2014)

Bottom Line: During the recent 15-years period (1997-2012), several studies have investigated the association between noise, hearing damage and other side effects of noise in Iran.The data were then recorded in a modified form and Statistical analyses were performed using SPSS, version 16.0.The Highest degree of hearing loss in the right ear was associated at 4000 Hz, and the highest degree of hearing loss in the left ear was associated to 1000 and 4000 Hz.

View Article: PubMed Central - PubMed

Affiliation: Dept. of Occupational Hygiene, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran.

ABSTRACT
Noise-induced hearing loss, which is one of the 10 leading occupational diseases, is a debilitating and irreversible disease. During the recent 15-years period (1997-2012), several studies have investigated the association between noise, hearing damage and other side effects of noise in Iran. The aim of this study was to review systematically the relevant literature related to noise-induced hearing loss, lead to developing noise exposure limits. In this systematic review, two researchers independently extracted the data from 31 past studies that had considered noise-induced hearing loss (including hearing loss, temporary and permanent hearing threshold shift and auditory trauma). The data were then recorded in a modified form and Statistical analyses were performed using SPSS, version 16.0. In analyzed studies the weighted average equivalent sound pressure level [L Aeq ] was 90.29 dB(A) and average hearing loss was 26.44 dB(A). The Highest degree of hearing loss in the right ear was associated at 4000 Hz, and the highest degree of hearing loss in the left ear was associated to 1000 and 4000 Hz. The majority of the reviewed studies have confirmed that exposure to a noise level above 85 dB (A) can lead to an increased chance of hearing loss. Furthermore, the results of the present review indicated that as L Aeq increased up to 85 dB(A), so did the severity of the hearing loss.

No MeSH data available.


Related in: MedlinePlus

The process of articles selection
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Related In: Results  -  Collection


getmorefigures.php?uid=PMC4499081&req=5

Figure 1: The process of articles selection

Mentions: A total of 59 published studies and one academic thesis were reviewed. 28 studies and finally 31 papers were excluded. Most of which were cross-sectional studies were analyzed (Fig. 1). From the 31 reviewed articles, 3 were presented at the fourth congress of occupational health (Table 1) (Hamadan; 2004) and 28 papers were published in Persian and English scientific outlets.


Noise Induced Hearing Loss in Iran: (1997-2012): Systematic Review Article.

Soltanzadeh A, Ebrahimi H, Fallahi M, Kamalinia M, Ghassemi S, Golmohammadi R - Iran. J. Public Health (2014)

The process of articles selection
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4499081&req=5

Figure 1: The process of articles selection
Mentions: A total of 59 published studies and one academic thesis were reviewed. 28 studies and finally 31 papers were excluded. Most of which were cross-sectional studies were analyzed (Fig. 1). From the 31 reviewed articles, 3 were presented at the fourth congress of occupational health (Table 1) (Hamadan; 2004) and 28 papers were published in Persian and English scientific outlets.

Bottom Line: During the recent 15-years period (1997-2012), several studies have investigated the association between noise, hearing damage and other side effects of noise in Iran.The data were then recorded in a modified form and Statistical analyses were performed using SPSS, version 16.0.The Highest degree of hearing loss in the right ear was associated at 4000 Hz, and the highest degree of hearing loss in the left ear was associated to 1000 and 4000 Hz.

View Article: PubMed Central - PubMed

Affiliation: Dept. of Occupational Hygiene, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran.

ABSTRACT
Noise-induced hearing loss, which is one of the 10 leading occupational diseases, is a debilitating and irreversible disease. During the recent 15-years period (1997-2012), several studies have investigated the association between noise, hearing damage and other side effects of noise in Iran. The aim of this study was to review systematically the relevant literature related to noise-induced hearing loss, lead to developing noise exposure limits. In this systematic review, two researchers independently extracted the data from 31 past studies that had considered noise-induced hearing loss (including hearing loss, temporary and permanent hearing threshold shift and auditory trauma). The data were then recorded in a modified form and Statistical analyses were performed using SPSS, version 16.0. In analyzed studies the weighted average equivalent sound pressure level [L Aeq ] was 90.29 dB(A) and average hearing loss was 26.44 dB(A). The Highest degree of hearing loss in the right ear was associated at 4000 Hz, and the highest degree of hearing loss in the left ear was associated to 1000 and 4000 Hz. The majority of the reviewed studies have confirmed that exposure to a noise level above 85 dB (A) can lead to an increased chance of hearing loss. Furthermore, the results of the present review indicated that as L Aeq increased up to 85 dB(A), so did the severity of the hearing loss.

No MeSH data available.


Related in: MedlinePlus