Showing 3 results for Monazzam
Mohammad Reza Monazzam Esmailpour, Ali Daneshvar, Kamal Azam,
Volume 2, Issue 1 (january 2018)
Abstract
Background: Noise as one of the common hazardous factors in the work environments, causes adverse effects on the mental health of individuals in addition to physical problems. This study was conducted to measure the exposure of workers to noise in a construction workshop and assess its association with noise disturbance. Methods: A total of 96 employees of a construction workshop were considered in this study and were divided into four working groups: executive, administrative, supervisory and machinery. Noise exposure of workers assessed according to ISO 9612: 2009. The noise disturbance questionnaire was also completed by participants. Results: The results obtained from the noise exposure measurement showed that the mean of equivalent sound level in employees of administration section was 82.28, in administrative section was 66.52, in supervisory section was 76.43 and in machinery section was 78.45 dB. The results of noise disturbance showed that 25% of workers rated noise in the work environment as very disturbing. The results of regression analysis showed that the type of occupation associated with disturbance of subjects with correlation coefficient of 0.413. Conclusion: According to the results of dosimetry and self-reported disturbance, the noise exposure level and noise disturbance of work environment due to sound sources are high. Administrative solutions need to be provided to reduce the exposure of workers to noise.
Faranak Mahdavi, Mohammad Reza Monazzam, Seyed Abolfazl Zakerian, Mohsen Meshkani,
Volume 3, Issue 3 (july 2019)
Abstract
Background: Noise-induced hearing loss (NIHL) is one of the most common but absolutely preventable occupational diseases. One of the measures to prevent and control noise's harmful effects in the workplaces is the use of hearing protection devices (HPDs) that workers do not often accept to use or do not use throughout the entire work shift. Therefore, the aim of this study is to investigate the effectiveness of delegating the right to choose HPD to workers on the increase of the duration of using them. Methods: This interventional study was conducted on 60 male workers divided into two groups, intervention (n: 30) and control (n: 30), who were exposed to non-permissible sound levels during sampling. A questionnaire including BASNEF constructs was completed by both groups in two stages, ie, before intervention and 3 months after completion of the intervention delegating the right to choose HPD to workers. Durations of using HPD were recorded in two stages in intervention and control groups and compared. Data analysis was conducted by SPSS 22. Results: In intervention group, the number of workers who used HPDs full time was 0 (0%) before intervention and 16 (53.33%) after intervention. The duration of using HPDs significantly increased after intervention in intervention group than in control group. Conclusion: The intervention based on providing HPDs that are appropriate for the needs and wishes of workers and available as well as promoting their use in the work environment can persuade them to use such devices continuously.
Seyed Hojat Mousavi Kordmiri, Mohamad Reza Monazzam, Milad Abbasi, Sepideh Kamali, Seyedeh Azam Mousavi Kordmiri,
Volume 3, Issue 3 (july 2019)
Abstract
Background: Noise pollution is considered as a major threat to human society that may affect life quality, efficiency, physical and mental health. Therefore, the present study was aimed to investigate the effects of noise exposure and noise sensitivity on psychological distress in an automobile parts manufacturer's employees. Methods: In this descriptive-analytical study, 325 employees of an automobile parts manufacturer who were exposed to different noise levels in seven groups were investigated. Daily personal noise exposure for each group was measured using calibrated sound level meter (SVANTEK-971) based on ISO-9612 standards. Then employees' mental disorder and noise sensitivity were determined using Kessler Psychological Distress Scale and Weinstein's Noise Sensitivity Scale (WNSS), respectively, and data was analyzed using SPSS v. 23. Results: Mean psychological distress was significantly different between noise sensitivity and noise exposure groups (P-value <0.05). Based on the results of multiple regression analysis among four variables including age, work experience, noise exposure and noise sensitivity, noise exposure and noise sensitivity had significant effect on psychological distress and could explain 0.36 and 0.25 of variance of response variable, respectively. Age and work experience at the level of 5% error had no significant effect on psychological distress status. Conclusion: It can be argued that the worsening of psychological distress in these employees is often due to noise exposure and noise sensitivity. As an individual variable, noise exposure has the greatest effect on increase of psychological distress compared to noise sensitivity level and demographic characteristics studied.
