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Showing 19 results for Accidents

M Malek, Gh Halvani, H Fallah, R Jafari Nodoushan,
Volume 3, Issue 1 (7-2011)
Abstract

Abstract Background: Each year many people lose their lives resulting from driving accidents. This can cause irreparable mental, physical and psychological loss for the survivals. Driving sleeping is referred to as one of the causes requiring a research on the relationship between driving accidents and damages resulted from with the sleep quality of the truck drivers. Methods: In this descriptive cross-sectional study 150 truck drivers of Darab city were selected randomly. A two-section questionnaire was used the first part of which included demographic information while for the second part it comprised Pittsburg Sleep Quality Index (PSQI). SPSS software was applied to analyze the data. Results: The results indicated the subjects' mean of PSQI as 4.9±2.70 with a bad sleep quality in 39.3% of the drivers. Less than a quarter of the subjects (22.7%) had accidents in the 5 previous years. Sleepiness was the cause of 25.3% of the accidents. Driving accidents, record for the drivers with appropriate sleep quality was lower compared with those with inappropriate sleep quality and the difference was statistically significant. Conclusions: The results represented that around a quarter of the accidents were due to the subjects' sleepiness. Over one third of them were not enjoying a good sleep quality. So it is suggested offering sleep health training to the drivers as well as issuing health card and sleep test as required for them.
Gh Halvani, M Ebrahimzadeh, R Nabi Meybodi , F Forooghi Nasab ,
Volume 4, Issue 3 (12-2012)
Abstract

Background: With increasing activities in underground mines and special risks of such mines, establishment of a coordinated and systematic safety system is important. Prediction of occupational accidents to prevent their occurrence is very important. Methods: In this cross-sectional study, the accidents occurred during 2006 to 2010 in one of the mines of central region of Iran were studied, and the relationship between the causes of accidents and its location, type of injury and injured organs, work experience, age groups, time of accident and work shifts were determined. Data were analyzed by SPSS 16. Results: Mean age of the subjects with accidents was 27.33±4.51 years and their work experience was between 1-3 years, the most frequent accident type included falling objects (24.85%) and contact with moving objects (20.9%). The most common cause of accidents was lack of control measures and the work environment and recklessness. Contusion and sprain (32.2%) and fractures (22.6%) were the most frequent outcome of events. Conclusion: In the present study, indices of repetition severity and frequency of the incident in 2010 were the most frequent ones which is the development of mining operations and the hazards faced by workers. The implementation of safety systems and education of personnel about safety rules is essential in order to prevent accidents, improve safety culture and reduce accident costs.
Dr Mh Ebrahimi, Dr Kh Sadeghniiat, Mr M Dehghani,
Volume 6, Issue 4 (3-2015)
Abstract

  Background : Driving is an occupation that poor quality of sleep and sleepiness may lead to increased errors and accidents in this profession. This study aimed to assess sleep quality of drivers and its association with road accidents in Shahroud .

  Methods: In this cross-sectional study, 312 drivers of Shahroud terminals were studied in 1392. Demographic, occupational and Pittsburgh Sleep Quality Index (PSQI) with seven scales were used. Its validity and reliability has been confirmed in several studies. SPSS statistical software version 16 was used to analyze the data .

  Results : The mean of drivers working hours per day was 9.8 ± 2.79h. The mean ± SD of total score of sleep quality (PSQI) in drivers was 4.5 ± 2.85 and 27.5% of them had poor sleep quality. A statistical significant association was observed between sleep quality and accidents in the last year, in the past five years and being guilty in the accident (p= 0.005 and p= 0.024 and p= 0.002 respectively). This association was not observed between sleep quality and the physical injury or death in accidents .

  Conclusion: Our findings showed that approximately one third of drivers had poor sleep quality. There was an association between sleep quality and accidents in the last year, in the past five years and being guilty in accidents. It seems that training program, especially about sleep hygiene may decrease accidents in the drivers

 


M Mououdi , M Shabani, A Hassani,
Volume 7, Issue 2 (9-2015)
Abstract

Introduction: Currently,work-related accidentsas the thirdcause of deathin the world, the second leading causeof death inIranandone of the mostimportantriskfactorshealth, social,economicandindustrialsocietiesaredeveloping. Incidentasone of theindustryhasbeenincorruptivepotential. Methods:Thestudywaslongitudinal. Registration formsforaccidentevaluatework related accidentspersonnelwere86-91years. IncidentsrecordedtoevaluatetheindicatorssuchasOSHA(F.R), (S.R), (F.S.I), (A.R),(I.R), (coefficient T-safe), (UCL & LCL), (LTC), (LWD) were used .ThanSPSS version17for analysisandchi-squaretestandoddsratioswere used. Result: Total numberof incidentsrecordedwas218counts. Repeat thehighestratein88incidents(3.019),the coefficient ofrepeatability-Severity(1.088),the maximumvalueofT-safe ratio(9.53), respectively.Scale(UCL & LCL)withstandardvalues(UCL & LCL)showed thatevery88 years respectively0.166and8.49respectively.Thisyear،the highestCoefficient(LWD),(LTC), (A.R)and(I.R)to(391.94), (1.68), (3.65%) of(0.000015) found.Theseageplaceaccidentswithpv =0.002 employment statusand location oftheeventwithpv =0.023 incidenttypeand location of theeventwithpv=0.000monthandtype ofeventpv =0.009 age andtype of eventwithpv =0.021placeor type of accidentwithpv=0.00was significant. Discussion:Recordssystemeventstoresponsiveindustry'scurrent formwithoutinvestigating the causesofaccidents. Usingappropriatemethodstoprevent,reduceorlimittheconsequencesoftakethe necessary measuresare. Some of the majorstrategiesproposedforachieving this goalinclude:Continuouseffectivetrainingof personnel, supervise carefully howdoing the right thingtodotorunaregularprogramindividual.
Gh Halvani, P Azad, S Zakyan, R Soltani Gerdefaramarzi, B Kouhnavard,
Volume 7, Issue 2 (9-2015)
Abstract

Introduction: human factor, road, vehicle and environment are factors that impact on driving road. One of the important statistics about accidents and injuries consensus on the role of human factors in 90-70 percent of all accidents. The purpose of this study was to investigate the role of human error in accidents in driver's terminals once the province of Yazd. Methods: This Cross-sectional study was carried out in 2013 among the drivers of transport terminals in Yazd city.The number of cases was 300 people that were selected by random method. A multi-part questionnaire including demographic characteristics, data related of drivering and Driver Behavior Questionnaire (DBQ) were applied. Results: The unintentional violations that were caused by the careless and lightheadedness was down that represents the good culture of the community to be studied. The relationship between the rate of speed when driving in a landslide was a significant correlation (03/0, 04 / 0P <). Also among the items age, work experience, type of certification, the amount of kilometers of driving per week and per year, and average and maximum speed of the car with the infringers, significant relationships were found. Conclusion: The main result this study was that a large number of drivers do not show necessity for committing violations and Most of violations was deliberately accuracy
M Ebrahemzadih, Farshad Foroghi Nasab, M Mortazavi, R Soltani Gerdefaramarzi,
Volume 7, Issue 3 (12-2015)
Abstract

Introduction: Refineries are considered as the base of many accidents and incidences due to their close proximity with dangerous substances, products, and production processes. This study analyzed the consequences of H2S leakage scenario from clot stuck unit of South Pars Gas Refinery and determined the dangerous boundaries and the risk limits of this scenario.

Methods: This was a descriptive cross-sectional study. It was carried out in gas refineries of South Pars Phases 2 and 3. To evaluate the gas dispersion modality and the effectiveness of leakage scenario, the PHAST 6.53.1 software was used. To do so, firstly, the different scenarios of leakage were determined under these conditions, and then different climatic conditions affecting these scenarios were identified. Ultimately, the consequences of these scenarios were determined and these dangerous boundaries and risk limits of these scenarios for the effective and impacted areas were determined at two-level criteria of the LC and IDLH.

Results: The findings of this study demonstrated that distance risk of LC50 for H2S Toxic dispersion for the restricted areas was 224 m and the distance risk of the IDLH for H2S Toxic dispersion for the impacted area was 386 m, respectively. Also, the results revealed that the ENI camp was in the dominant current direction in the distance of 200 m from phases 2 and 3. In the case of occurrence of leakages, many human damages and losses would happen. Consequently, it is mandatory to change the place of residence of camp inhabitants and immediately take appropriate engineering control measures.

Conclusion: Using the data related to hazards and considering the results of the conducted analysis, and also assessing the consequences in the frame of risk limit, the collective risks of these disaster scenarios could be determined by the use of population assessment software.


T Rahimi Pordanjani, A Mohamadzade Ebrahimi,
Volume 7, Issue 3 (12-2015)
Abstract

Abstract Introduction: Accidents third cause of death in the world and is the second cause of death in our country. Identify the factors influencing occupational accidents in the prevention of these accidents are useful. One of these factors is cognitive variables. So the aim of the present study examines relationships between self-efficacy and self-regulation with occupational accidents in an industrial company. Methods: In this descriptive – correlation study, the population are all line employees that working in an industry company (N= 1160). 265 employees were selected by the use of stratified random sampling. Participants in this study were measured by using safety self efficacy, regulatory focus at work and incident reporting rata scales. In order to analyze the data, the regression analysis and in the validation stage, the confirmatory factor analysis by use software AMOS-21 and the Pearson’s correlation coefficient by use software SPSS-19 were applied. Results: Findings indicate that correlation coefficients between safety self-efficacy with occupational accidents were negative and significant (p<.0001). Correlation coefficients between Prevention focus with occupational accidents were negative and significant (p<.0001). Correlation coefficients between Promotion focus with occupational accidents were positive and significant (p<.0001). Stepwise multiple regression analyses yielded of the three independent variables, only two variables of prevention focus and safety self-efficacy found permit entry into the regression equation (R2=0.174, p<.0001). Conclusion: The results of this study showed the importance of cognitive variables of prevention focuses and safety self-efficacy as predictors of occupational accidents. Therefore, in order to select people for high risk environments such as petrochemical industry and also in training courses we should rely on these variables.


Fereydoon Laal, Abolfazl Barkhordari, Ah Kh, Gholamhossein Halvani,
Volume 7, Issue 4 (2-2016)
Abstract

Introduction: According to the increasing growth of industries and technologies and consequently increasing accidents and occupational diseases, this study aimed to by analyzing the main causes of accidents in Yazd Combined Cycle Power Plant and finally prepared the situation to present suitable control measures.

Methods: This study is a descriptive–analytical, which is analyzed the trend of occupational accidents. In this study, information collected through check lists and interviews with accident victims and based on the data extracted, the accident indicators were calculated. Then, the data were analyzed using SPSS software.

 Results: During an 8-year- period, out of 1189 workers, 287 cases of occupational accident have been registered. Results indicated that there was a meaningful relationship between the age, job experience and marital status. The most types of accidents and their causes were related to the trauma and unsafe acts, respectively. The most events had occurred in winter, at the beginning of the day shift in the maintenance unit. Accident indicators decreased specially accident frequency rate (AFR). In this study, maximum and minimum value of frequent-severity index was 1.74 in 1383 and 0.56 in 1390, respectively. In addition the results showed that, education level on accident frequency rate and income monthly had a protective effect on accident frequency rate and severity- frequency rate (FSI).

Conclusion: Nowadays, to prioritize hazards and corrective actions, it was used the results of techniques and risk assessments. The results related to accidents can be used at comprehensive database as well as they wereutilized for qualifying the risk the risk assessments.


M Hasoumi, Y Jouyani , H Asadi, M Khakian, A Aryankhesal ,
Volume 7, Issue 4 (2-2016)
Abstract

Introduction: Owing to the wide variety of jobs and professions in hospitals, many risk factors threaten staff health. The current study examines the relationship between staff’s job accidents and the resulting absence in hospitals of Tehran and Iran universities of Medical Sciences.

Methods: This was a cross-sectional study. Data were collected by questionnaires asking different staff about their job accidents through 2013 in 26 hospitals of Tehran and Iran Universities of Medical Sciences. The Chi-square and independent t tests were used to examine the relationship between job accidents and absence.

Results: 368 completed questionnaires were returned out of 385 distributed ones. Body cut resulted from pointed and sharp objects with 77.2 percent and burns with 6.7 percent were the most and least prevalent accidents among staff respectively. Skin touch with patients’ blood and other fluids was reported as the most absence-causing factor with 92 days, and on the other hand staff accident with trolleys and beds, burns and electricity shock resulted in no day of absence. A meaningful relationship was found between the type of accidents and the resulted days of absence.

Conclusion: Blood and other biological fluids were the main risk factors for staff to send them off their job. For improving staff efficiency and effectiveness, the job accidents should be investigated based on their resulted absence days and corrective considerations are respected.


Azim Karimi, Ehsanollah Habibi, Habibollah Dehghan Shahreza, Behzad Mahaki, Abolghasem Nouri, Fatemeh Aminaei,
Volume 9, Issue 1 (3-2017)
Abstract

Introduction: Investigations show that the scattering of accidents in individuals is not the same, and three quarters of all accident occur to one quarter of accident prone individuals. The aim of the study was to design and validate a questionnaire for screening out the accident prone individuals.

Methods: This study in 5 stages of item generation, content validity assessment, reliability, construct validity, and criterion validity was performed among 230 workers who had and who had not experienced accident in 19 industries of Isfahan, Iran. For data analysis SPSS and Amos 22 were used.

Results: 195 items were identified during item generation stage. In content validity evaluation stage 13 items were removed, 15 items were modified and 79 items were merged and convered to 14 items. Internal consistency (Cronbach's alpha) of the remained items was 0.86. The results of confirmed validation showed that comparative fit index was acceptable. (CFI=0.99, GFI=0.96, RMSEA=0.066, RMR= 0.022). T test showed that the mean scores of the workers who had accident were significantly higher than the workers who had not experienced accident (p<0.001).

Conclusion: The result of confirmed validation showed that there is a good agreement between the proposed model and the field data. Reliability and construct validity showed that the current questionnaire is suitable for screening out the accident prone individuals.


Prof. Ali Mehdad, Mr. Mehdi Molavi,
Volume 11, Issue 4 (3-2020)
Abstract

Background: In recent decades, scientific growth has led to industrial progress and increased welfare for humans. But there are other unintended consequences, including work-related accidents. The incidence of occupational accidents in the various countries of the world, especially in the industrial sector, is increasing over time. So that occupational accidents are one of the most important problems in developing countries today. Thus, the purpose of this study was to compare the organizational commitment, job stress, and personality traits of injured and non-injured employees in Isfahan Refinery Company.
Methods: The research method is descriptive and in terms of comparative causal research, the statistical population of the study was 420 people and the number of unfortunate incidents in the number of 238 people in the autumn of 1397-39, totally 658 people, among whom A total of 100 poeple were selected via convenience sampling in two groups of 50. In this research Organizational Commitment Questionnaire (Ellen & Miller, 1990), Job Stress Questionnaire (Lambert et al., 2007), Personality Characteristics Questionnaire (McCrae &, 2004) were used.
Results: The data were analyzed by using multivariate and one-variable variance analysis. The results of multivariate analysis of variance showed that there was a significant difference between the two groups of injured and non-injured employees in the job stress and affective commitment, but their differences in normative and continuance commitment and personality traits were not significant.
Conclusion: According to the findings of this study, it can be concluded that workplace accidents could be decreased through increasing of affective commitment and decreasing of job stress. Therefore, the need to pay attention to these factors should be considered by policymakers, scientists and practitioners.

Somayeh Moradi Bontoot, Gholam Hossein Halvani, Naser Sadra Abarghouei, Sara Jambarsang, Hossein Fallah, Vida Sadat Anoosheh, Babak Samsami,
Volume 12, Issue 1 (6-2020)
Abstract

Introduction: Annually, many people die or suffer from irreparable injuries in road accidents worldwide. One of the causes of accidents is drivers, cognitive factors and the vehicle color is one of the factors that affect the cognitive performance of the drivers. Therefore, this study aimed to investigate the relationship between vehicle color and type of accidents leading to death and injury.
Materials and Methods: This descriptive cross-sectional study was performed on 300 randomly selected cases of accidents in Kerman. Information including the manner of accident, name and color of vehicle, location, cause, time, area of protection, weekday, season and type of accident were collected from traffic police and traffic department statistics and analyzed by using SPSS software.
Results: The results of the study showed that most of the accidents occurred during daylight hours. Motorcycle, black and white vehicles had the highest and yellow and beige vehicles had the least frequency. There was no significant difference between vehicle color (dark and light) and other variables with the type of accidents leading to the driver's death and injury.
Conclusion: According to the results of this study, no significant relationship was observed between vehicle color (dark and light) and the type of accidents leading to death and injury on. One of the reasons seems to be the difference between the methods of statistical analysis. Further studies are needed to investigate the relationship between the type of accidents and vehicle color.

Dr Majid Hajimaghsoudi, Mohamadhoein Dehghani, Mostafa Sadooghian,
Volume 13, Issue 2 (9-2021)
Abstract

Introduction: Health care workers are exposed to numerous occupational accidents and injuries, the occurrence of which leads to physical and psychological problems for employees. Accident control is an important factor in reducing risks; Ensuring the health of staff and patients and efforts to prevent occupational accidents, especially in clinical settings. This study was conducted to investigate occupational accidents in three hospitals of Yazd.
Materials and Methods: This is a descriptive-analytical cross-sectional study that was conducted in three teaching hospitals in Yazd. A total of 186 non-physicians from different wards of these three hospitals were included in the study by simple stratified random sampling. Data collection was performed using an 18-item occupational accident questionnaire. Data analysis was performed using SPSS21 software using descriptive statistics and Mann-Whitney and Kruskal-Wallis statistical tests.
Results: Among understudy accidents, exposure to blood or body fluids showed the highest frequency while falling had the lowest frequency. The results showed that there was no relationship between gender and the number and type of accidents, but in some of the accidents, there was a significant relationship between the number and type of accidents, workplace, work experiences, educational level, shift work, and hospital type (p<0.05).
Conclusion: Because these accidents occurred at least once in each of the three selected hospitals, it is necessary to prevent these accidents. Regarding the complex nature of hospital accidents and prevention of incidents, management of hospital accidents and prevention of accidents, requires the determination of all staff and management of the hospital organization.
Ali Pourbandori, َamir Hossein Davami,
Volume 13, Issue 4 (3-2022)
Abstract

Introduction: Occupational accidents impose a lot of direct and indirect costs on the national economy of the country. Because, as a fact, resources are  limited  for  reducing  the  risks  and  costs  can  affect  the  optimal  investment  in  safety issues, the aim of this study was to calculate the economic costs of occupational accidents in one of the South Pars Gas Refinery, Assalouyeh, Boushehr Province.
Material and Methods: The present research was a descriptive-analytic study, and the costs from 92 occupational accidents occurred in the South Pars Gas Refinery during the period of 2017 and 2018 is estimated. Estimation of these costs contributes to decision-making for cost control. The systematic accident cost analysis (SACA) method, which calculates their costs and information in the forms of each incident and calculates the total cost based on the type of incident after the analysis of the cost of the incident. Excel, SPSS version 17 (SPSS Inc., Chicago, IL, USA), Kolmogorov-Smironov and Chi-squared tests were used for data manipulations and statistical analysis.
Results: The Most working days were lost in the Gas Refinery (12613 days). The evaluations of accident cost showed that 2/3 of the costs of occupational accidents are visible in the corporate accounting information systems reviewed while 1/3 is hidden from management view. As can be seen the costs due to the absence of the injured employee are the largest cost category with an average of 71%. The highest cost of occupational accidents for a company with 1500 employees was estimated to approximately 27,440,000,000 Rials.
Conclusion: The costs of accidents on employers and ultimately the country's economy are noticeable.  It is really important to recognize the accidents’ causes, control the rate of them and provide sufficient and appropriate occupational health and safety services.
Mr Abdulreza Mashroofeh, Mr Mohammad Ali Bolboli, M Ali Pourbandori, Mr Hassan Shorofeh, Mr Saeed Karimi,
Volume 14, Issue 1 (5-2022)
Abstract

Introduction: Most critical accidents in different industries are observable, but their severity is also predictable and can be controlled. Provided that accident analysis is properly managed with a preventive approach and based on correct findings, in a principled and realistic manner, root causes, corrective actions, and safety measures regarding accidents are performed.
Material and Methods: The present research was a descriptive-analytic study, and the reported and recorded fatal occupational accidents were analyzed in the onshore section of one of the construction refinery projects in the South Pars Gas Refinery over a decade using the Tripod Beta method and then main risk factors, pre-conditions, and underlying causes, as well as the existing protective barriers, were identified, and an accidents tree was drawn.

Results: The analysis of fatal occupational accidents showed that 26 immediate causes, 39 preconditions, and 50 underlying causes were involved in those accidents. Six key risk factors include lack of responsibility/organizational impact (57.8%), training (22.2%), hardware or tools and equipment (6.7%), maintenance management (6.7%), work procedures (4.4%), and Error Enforcing conditions (2.2%) had the largest share of the occurrence of accidents.

Conclusion: More than 80% of fatal occupational accidents can be controlled by modifying the two main factors, responsibility and organization and training. Therefore, implementing the total productive maintenance method, effective monitoring of staff work, hiring staff with sufficient knowledge and skills, and improving training indicators will increase understanding of hazard sources, improve safety and reduce accidents.
 
Rasoul Jannaty, Kamaladdin Abedi, Limo Jannaty,
Volume 14, Issue 4 (3-2023)
Abstract

Introduction: Statistics show that occupational accidents in the construction industry are relatively high. Also, a significant percentage of these accidents in this industry leads to death. Therefore, in this study, the parameters affecting the causes of occupational accidents in the construction industry were evaluated using the combined method of Fuzzy logic-AHP and Pareto's theory in Kurdistan province, and management and engineering mitigation measures were determined.
Methods and Materials: In this study, the effective parameters in the occurrence of accidents in the construction industry were identified and a questionnaire based on fuzzy hierarchical analysis was designed and distributed, which was completed by 83 occupational health and safety specialists in the Kurdistan province of Iran. The data analysis was done based on Fuzzy logic-AHP and Pareto theory.
Results: In the evaluation of this study, out of the set of eight factors, unsafe conditions were found to be the most influential factor. Also, among the sub-factors of this index, the two parameters of lack of scaffolding and safety equipment for working at height and lack of protective fences in existing cliffs were the most important.
Conclusion: Based on these results, it is suggested that to reduce the occurrence of accidents in this industry, control measures to create safe working conditions at height should be prioritized. Also, paying attention to the parameters determined by the Pareto theory in each factor can easily reduce more than 80% of the causes of occupational accidents in this industry.



Gholamhossein Halvani, Zahra Ebrahimi, Navid Mehrab, Hamideh Mihanpour,
Volume 14, Issue 4 (3-2023)
Abstract

Introduction: Home accidents means accidents that happen in the house or its surroundings, and are the main cause of death and disability of children. Risk assessment is an organized method to identify, predict and reduce risk to an acceptable level. Therefore, our goal in this study is to identify and evaluate domestic hazards in the homes of Yazd city for children under seven years old.
Materials and Methods: In this descriptive-analytical study, 322 home accidents were identified in a cluster method from different areas of Yazd city. Data were collected using a researcher-made questionnaire whose validity and reliability were measured by experts (α=0.764). After completing the questionnaires, the collected data were entered into SPSS software version 20 and were analyzed by descriptive tests, ANOVA and T-TEST in confidence level of 95%
Results: The most injuries caused by hazards are cuts, bone fractures/dislocations and contusion with a frequency of 17%, 14.8%, and 9.6%, respectively. The highest risk assessment code belongs to minor risks with a frequency of 39.76%, and the lowest frequency is for critical risks (3.17%). There was a significant relationship between most of the risks in homes with the areas of Yazd city and the type of building (p-value<0.05).
Conclusion: This study shows the importance of using from the risk assessment code method, which can be used to identify and determine the relative risk of hazards for each part of the house and provide prevention solutions based on priority. Also, by using appropriate training and policies to monitor compliance and full implementation of legal requirements in construction, home accidents and the resulting complications have been reduced, and safety culture and quality of life of families have been improved.


Gholamhossein Halvani, Abbas Soleimani, Ali Sadri Esfahani, Afarin Akhavan, Morteza Mortazavi, Mahdi Jafari Nodoushan,
Volume 15, Issue 2 (8-2023)
Abstract

Introduction: Occupational accidents have several life and financial consequences in industries. Among the causes of accidents, human error and unsafe behavior are known as the most important factors. Studies showed that biorhythms affect human errors and occupational accidents. This study aimed to investigate the relationship between biorhythms and the severity of occupational accidents in the chemical industry.  
Materials and Methods: This study investigated chemical industry accidents from 2009-2022. After removing the incomplete reports, 279 accidents report was collected. The investigated accidents were classified into two groups major and minor. Information related to the biorhythms cycles was analyzed using Natural Biorhythm software. Data analysis was done using SPSS-24.
Results: The investigation of accidents showed that 115 and 164 people were involved in major and minor accidents, respectively. In this study, in the critical state of the intellectual cycle, the number of major accidents was significantly higher than minor accidents (P=0.009). In the investigation of morning shift work accidents, the relationship between the critical state of the intellectual cycle and the severity of accidents was confirmed (P=0.004). We found no significant relationship between physical and emotional cycles with the severity of accidents. 
Conclusion: The results of the present study showed that the critical days of the intellectual biorhythm are related to the severity of occupational accidents. It is recommended to conduct more studies on different jobs and duties to clarify the exact relationships between the variables. 

Afarin Akhavan, Farzaneh Galezan Shiraz, Gholam Hossein Halvani, Mahdi Jafari Nodoushan,
Volume 15, Issue 3 (10-2023)
Abstract

Introduction: Construction industries have a complex nature, so they have a high rate of occupational accidents. Construction workers are known as one of the most stressful jobs. In addition to the mental health of employees, occupational stress also has a negative effect on the safety of the workplace. The present study investigates occupational accidents and job stress in a construction company and its relationship with the demographic characteristics of employees. 
Materials and Methods: In the present study, occupational accident reports in a construction company were examined. After removing the incomplete reports, the information on 100 accidents such as the type of accident, the cause of the accident, the consequence of the accident, and the person who experienced the accident was collected. After collecting the accident data, the job stress of the injured employee was checked using the Osipow Job Stress Questionnaire. Data analysis was done in SPSS-24 software.  
Results: The results showed that slipping and falling from a height had the highest frequency (41%), and electrocution had the lowest frequency (8%) among the accidents. The majority of the injured employees (96%) were placed in the moderate to severe stress group. No significant relationship was found between occupational accidents and demographic variables (P>0.05). Also, a positive and significant relationship was found between job experience and job stress (P<0.05). 
Conclusion: The results of this study showed that it is necessary to take safety measures to reduce fall accidents. Due to the negative effects of occupational stress, it is recommended to implement measures such as developing a training program and holding stress management workshops, increasing organizational support, and identifying and adjusting stress sources. 
 

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