فهرست مطالب خلیل طاهرزاده چنانی

Human error plays a significant role in the occurrence of industrial accidents. Displacement and unloading operations are operations in which the occurrence of human error may lead to plenty of human and financial losses. The present study aimed to investigate the possibility of human error occurrence in overhead crane operators in a Steel Company in Hormozgan, Iran.

This cross-sectional and descriptive study was conducted using the Standardized Plant Analysis Risk-Human Reliability Analysis (SPAR-H) technique. In this study, the job tasks of overhead crane operators were firstly analyzed using the hierarchical task analysis (HTA) technique. Subsequently, the probability of human error in job tasks was assessed using the SPAR-H technique.
(Ethic code: IR.ACECR.JDM.REC.1399.005)

Generally, five main tasks and 16 sub-tasks have been analyzed in this study. The highest probability of error was related to the three sub-tasks of longitudinal motion, transverse motion, and high and low motion (0.3975). The lowest probability of error was under the duty of recording shift reports, transmitting information orally, and writing (0.05). The results of this study clearly showed the effect of interdependence on increasing the probability of error occurrence.

Based on the results of the present study, some preventive measures were proposed to reduce the possibility of human error, including identifying and controlling job stressors, correcting the ergonomic status of crane cabins, preparing work instructions, as well as training and monitoring their proper implementation.

safety occupational safety researchers have always analyzed climate analysis. Climate can be investigated at different organizational levels. The purpose of the present study was to examine the safety climate among Nain tile factory workers and its relationship with having a history of occupational accidents.

This cross-sectional and descriptive-analytical study was conducted in 2019 among the Nain Tile factory staff. The Nordic Safety Climate Questionnaire (NOSACQ-50) was used to assess the safety climate among workers of the different organizational departments. Out of 252, 142 workers were selected by simple random sampling. Descriptive and analytical statistics were used to analyze the data. The instrumentchr('39')s internal consistency was also calculated by calculating Richardsonchr('39')s coefficient of coefficient 0.942.coefficients were used for analytical analysis. Analyzes were performed in SPSS software version 19 with a significance level of 5%.

The reliability coefficient of the whole questionnaire was calculated 0.95 using Cronbachchr('39')s alpha test. The safety climate score was higher than two in all domains. Safety climate score was significantly correlated with work area and shift type. The highest score of safety climate was in the crusher section as well as in day shift work. There was no significant relationship between safety climate score and other variables of the study.

The safety atmosphere score is affected by the day shift and the workplace section. Therefore, it is suggested to modify the job plan and work shifts to improve the prevailing safety climate.

The irreparable consequences of human error in the health care sector have made patient safety an important principle in medical professions. The aim of the present study was to investigate the probability of human error in operating room personnel in the process of appendectomy operations.

This cross-sectional and descriptive study was performed to identify and evaluate the probability of human error in operating room personnel's tasks in the process of appendectomy in Shahid Sadoughi Hospital in Yazd. Initially, by interviewing personnel and studying the process and procedures of the work, the job duties of the personnel were analyzed using HTA method. Finally, the probability of error was calculated using SPAR-H method for different tasks.

The average human error probability for all tasks was 0.173. Also, the highest mean of error was related to anesthesiologist duties (0.23) and the least related to scrub duties (0.101).

The SPAR-H method can be used to analyze and quantify the probability of human error in the operating room. To reduce the likelihood of human error, we can reduce dependency by performing different tasks with different people and if possible with long time between them. Also, stress, complexity and procedures were identified as the most important factors affecting the probability of error.

Dear Editor in Chief, Recently, using statistical tests as useful and ubiquitous tools in medical data analysis is increasing (1). However, some researchers are using statistical methods without sufficient knowledge. The purpose of this letter is to provide applied information on some of the most commonly used statistical tests. All statistical tests examine a hypothesis. A hypothesis is defined as a claim that its accuracy or inaccuracy is unknown (2). In general, variables are divided into quantitative and qualitative categories (3). Some popular statistical tests that examine the relationship between two or more variables are summarized bellow according to the main purpose of this article.