en Occupational Health Original Article <p dir="ltr" style="text-align: justify;"><strong>Background: </strong>There is a high prevalence of &nbsp;occupational injuries due to accidents in construction industries which affect human health. Therefore, the&nbsp;exploration&nbsp;and analysis of&nbsp;contributing factors of such accidents can lead to their&nbsp;prevention and the&nbsp;reduction of&nbsp;their consequences. This study was conducted with the aim to identify factors related to occupational injuries&nbsp;and the severity of their consequences on large&nbsp;construction sites in Iran.</p> <p dir="ltr" style="text-align: justify;">&nbsp;<strong>Materials & Methods:</strong>&nbsp;This study was a<del cite="mailto:Maz" datetime="2015-11-14T15:35">n</del> cross-sectional investigation on five-sequential-year accidents on large&nbsp;construction sites. Data include<ins cite="mailto:Maz" datetime="2015-11-14T15:41">d</ins><del cite="mailto:Maz" datetime="2015-11-14T15:41">s</del> the information of 500 human injuries due to&nbsp;accidents. Data analysis was carried out using SPSS statistical software and statistical tests such as linear regression, independent sample t-test<ins cite="mailto:Maz" datetime="2015-11-14T15:42">,</ins> and one-way ANOVA.</p> <p dir="ltr" style="text-align: justify;"><strong>Results:&nbsp;</strong>The mean accident frequency rate and accident severity rate was&nbsp;4.71 and 216.28, respectively. The average age and job experience of injured workers were 29.18 &plusmn; 7.67 and 4.67 &plusmn; 3.9 years respectively,&nbsp;and had significant statistical difference with accident frequency rate and accident severity rate (P < 0.05). The association between accident indices and all factors related to accident type, equipment-related factors, unsafe condition and&nbsp;act&nbsp;and accident nature was&nbsp;found to be&nbsp;significant (P < 0.05). Furthermore, the results showed that accident frequency rate and accident severity rate had a significant association&nbsp;with all factors related to health, safety, and the environment&nbsp;<ins cite="mailto:Maz" datetime="2015-11-14T15:48">(</ins>HSE<ins cite="mailto:Maz" datetime="2015-11-14T15:48">)</ins> training, housekeeping&nbsp;and HSE control measures (P < 0.05).</p> <p dir="ltr" style="text-align: justify;"><strong>Conclusions:&nbsp;T</strong>he results indicate that the occurrence and severity of construction accidents were due to the combination of failures in a collection of different contributing factors including&nbsp;demographical and organizational factors, accident type, factors related to work conditions and equipment, unsafe actions&nbsp;and conditions, nature of accidents, HSE training and control measures, and accident time and place. Therefore, to prevent and reduce the rate of such accidents, all these factors should be regarded.</p> Occupational Accidents, Construction Industry, Accident, Iran 88 95 http://johe.rums.ac.ir/browse.php?a_code=A-10-134-1&slc_lang=en&sid=1 I Mohammadfam mohammadfam@umsha.ac.ir 2240031947532846004391 2240031947532846004391 No Dept. of Occupational Hygiene Engineering, School of Public Health and Research Center for Health Sciences, Hamadan University of Medical Sciences, Hamadan, Iran. Hamadan University of Medical Sciences A Soltanzadeh Soltanzadeh.ahmad@gmail.com 2240031947532846004392 2240031947532846004392 Yes Dept . of Occupational Hygiene Engineering, School of Public Health and Research Center for Health Sciences, Hamadan University of Medical Sciences, Hamadan, Iran. Hamadan University of Medical Sciences A Moghimbeigi moghimb@yahoo.com 2240031947532846004393 2240031947532846004393 No Dept. of Epidemiology & Biostatistics, Public Health Faculty, Hamadan University of Medical Sciences, Hamadan, Iran. Hamadan University of Medical Sciences M Akbarzadeh akbarzadehms@gmail.com 2240031947532846004394 2240031947532846004394 No Dept. of E pidemiology & Biostatistics, Public Health Faculty, Hamadan University of Medical Sciences, Hamadan, Iran. Hamadan University of Medical Sciences