جستجوی مقالات مرتبط با کلیدواژه "usability" در نشریات گروه "پزشکی"

The safety harness is a critical device for preventing falls from height, particularly in the construction industry. This study aimed to identify the factors contributing to the non-use of safety harnesses during work at height and to evaluate the comfort, satisfaction, and usability of these harnesses among construction workers in Tehran using a custom-designed tool.

A semi-structured interview was conducted with construction workers to identify the factors influencing the non-use of safety harnesses. The collected data were analyzed using MAXQDA 10 software. Based on the results, which revealed dissatisfaction with the current safety harnesses, the levels of comfort, satisfaction, and usability were assessed using the Safety Harness Usability and Comfort Assessment Tool (SHUCAT) questionnaire.

The reasons for not using safety harnesses were categorized into four main groups: management factors, worker attitudes, comfort, and harness design. These were further subdivided into 27 subgroups. The average satisfaction and comfort scores for safety harnesses were 26.8 ± 6.25, indicating that workers generally felt uncomfortable and dissatisfied with their harnesses. The average usability score was 38.70 ± 5.60, reflecting poor usability of the harnesses.

Improving the safety harness design could enhance workers’ comfort and satisfaction, increasing their willingness to use the equipment. Incorporating feedback from users and experts into the design process can help address the identified shortcomings and result in better product development.

Today, the employees have moved towards less mobility and more sitting due to the use of modern technologies in the workplace, and the complications arisen from static work and fixed posture have caused numerous disorders, including musculoskeletal disorders. This study was conducted in order to evaluate the comfort and usability of the ergonomic sit-stand desk converter with the purpose of prevention of disorders caused by continues sitting in workers.

30 employees and Faculty Members of a university voluntarily entered this study with consent and awareness. After providing the necessary explanations, two researcher-made questionnaires of Local Perceived Discomfort (LPD) and Sit-Stand Desk Converter Usability Questionnaire (SSDCUQ), two methods of posture analysis, two methods of Workstation evaluation and general satisfaction together with 2-8-20 software and an ergonomic desk converter were provided to the volunteers. After the test period, SPSS version 22 software and statistical tests such as mean, standard deviation, Spearman's rank correlation coefficient, and Pearson correlation coefficient were used to analyze the data.  

The total average of LPD in different parts of body was 0.48 ± 0.87, which indicates that the converter works in the range of no problem to very little discomfort. The average general satisfaction with the converter's function was 3.18 ± 1.08 which is in the moderate to good range. Also, a significant relationship was found between different situations of using the converter in the analysis of different sitting and standing postures (P<0.0005), which indicates the improvement of the sitting and standing posture during the use of the converter.

height-adjustable workstations are a good choice to reduce sitting time and improve posture. Despite the improvement of sitting and standing posture when using the converter, there are limitations such as the user ignoring software warning to sit and stand in the mechanical converter under study

Simultaneously with the COVID-19 epidemic, many efforts were made to manage and treat the disease. One of the main activities was the development of health information systems to help monitor this disease, but due to the speed of the disease’s spread, there was not enough time to evaluate the usability of these systems. Therefore, the present research was conducted to evaluate the usability of the Medical Care Monitoring Center (MCMC) system.

In this cross-sectional descriptive study (2022), the usability of the MCMS system was evaluated using a heuristic evaluation method. The system’s usability was investigated based on the Nielsen’s usability principles. All the problems identified by evaluators were collected in a single list and the mean severity of each problem was calculated.

There were 41 usability problems. The lowest mismatch with usability principles was related to “Help and documentation” (n=1) and the highest one was related to "user control and freedom” (n=8) and “Match with real world” (n=7). In addition, most of the identified problems had a relatively high degree of severity and were placed in the category of major problems.

Using the usability evaluation, a significant number of usability problems of the system were identified which, if not resolved, can cause increased errors, dissatisfaction, and decreased quality of information; therefore, it is necessary to solve these problems by the designers and developers of this system.

Integrated health system (SIB) is a common electronic health records, widely used in Iranian healthcare centers. The present study aimed to investigate the usability of this system among selected users.

A descriptive-analytical study was designed and conducted in 2021 with participation of 196 healthcare workers. Usability of the system was tested by means of the System Usability Scale (SUS) and the IsoMetric Standard Questionnaire. Data analysis was applied using SPSS version 26 software.

SUS showed a marginal usability for the system. All the 7 dimensions of the isometric questionnaire were found to be within the relatively favorable range with an average score of 3.1 to 3.2. SIB system was unacceptable for 30.6% of users, marginaly acceptable for 45.4%, and acceptable for 23.9% of users. Results showed a significant but inverse relationship between usability of the system with the average time past on it during a working day (p<0.039). Women estimated this system as more usable compared to men (p = 0.007).

The present study emphasized that SIB system needs specific considerations to become more usabile, and compatible with ergonomic dialogue principles. The most effective modifications would be included eliminating complicated steps, harmonizing relevant process, reducing memory-based process, individualization, error tolerancy, and user-centered design.

Standard operating procedures (SOPs) are always considered a guide for performing tasks in industries. The present study aimed to identify the effective factors in increasing the usability of safety SOPs.

In this observational-analytical study, guidelines, books, and studies in the SOPs were used to identify factors that improve their usability. These factors were assigned to four main groups. A Delphi study was conducted to investigate and ensure the effectiveness of these factors. Data analysis, including validity and reliability, was performed in SPSS software (version 22).

In this study, which aimed to design and develop a tool for increasing the usability of SOP, 22 factors were identified and categorized into four main groups. After the Delphi study, the content validity ratio (CVR) for the designed instrument was 0.83, the content validity index (CVI) was calculated at 0.955, and Cronbach's alpha coefficient was obtained at 0.819.

In this study, 22 factors in four main groups were identified to be effective in increasing the usability of safety SOPs. Their effectiveness was evaluated and proven. According to this study, all procedures in the industry should be developed in a specific framework, their applicability should be examined in a specific period of time, and if necessary, they should be reviewed and amended.

Recent developments in the use of mobile technologies have given rise to opportunities for more effective and cost-efficient services for people with chronic diseases. Considering the relatively high prevalence of post-traumatic stress disorder (PTSD) in Iran and the lack of a native application for the self-management of many complications of this disorder, the present study aims to develop and evaluate a mobile application for PTSD self-management.

This developmental-applied study was conducted in two stages. In the first stage, interviews and a literature review were carried out to identify users’ requirements and expectations of the application. Then, the application was modeled, designed, developed, and tested based on the requirements. In the second stage, the usability of developed application was evaluated by experts and users.

The following services were implemented in the application: psychoeducation, coping skills, breathing exercise, relaxation, positive affect, social support, self-assessment, reminders, useful links, and self-monitoring. According to experts’ evaluation, the application was of acceptable quality (78.25%). The application was relatively acceptable from the users’ point of view (68.67%). In the evaluation process, experts were most satisfied with the functionality of the application (80 %), and users were most satisfied with the application’s ease of use (76%).

Using the application can be useful in promoting access to healthcare services for patients with PTSD, and in addition to saving time and costs, it can be effective in the self-management of this disorder.

A quality criterion for evaluating information systems (ISs) is their usability, which can be determined by examining the user interface. User interface issues may generate user errors, dissatisfaction, and inefficiency, making IS adoption difficult. Therefore, the International Standard Organization recommends usability testing to evaluate IS acceptability and deployment. So, this study aimed to develop a native model for the usability testing of hospital information systems (HISs) via heuristic evaluation (HE).

This multi-staged qualitative study was conducted in 2020; ScienceDirect, PubMed, Web of Science, Scopus, Civilica, and Magiran databases were searched. After meeting the inclusion criteria, the articles were scored. Then, the initial model was created in the following stage by extracting data from library sources and validated using the Delphi technique, and consequently, the final model was presented.

: The native model was developed using thirteen principles: 1) visibility of system status, 2) the match between the system and the real world, 3) users’ control and freedom, 4) consistency and standards, 5) error prevention, 6) recognition rather than recall, 7) flexibility and efficiency of use, 8) aesthetic and minimalist design, 9) helping users recognize, diagnose, and recover errors, 10) documentation and help, 11) skill , 12) pleasurable, respectful interaction with users, and 13) privacy protection.

This study demonstrated that localizing the usability evaluation of HISs based on trustworthy sources and HE is a wise strategy, because not only it avoids repetitive processes, but also it uses the best up-to-date resources to enable the presentation of the highest evaluation quality.

Usability is a criterion that indicates a product’s applicability and ease of use. A usable product allows the user to perform a task correctly and quickly, preventing errors and fatigue. The present study aimed to determine the ergonomic usability of the Zanjan University of Medical Sciences website of educational management system from the students’ viewpoint in 2019 and 2020.

This cross-sectional study evaluated the usability of one of the websites for educational management systems using a standard questionnaire. The study examined the utility of web-based applications in the research processes automation field. The questionnaire was embedded in Google Forms and emailed to Zanjan University of Medical Sciences students, 404 of which returned. The data were analyzed with a 0.05 confidence level using SPSS software version 16.

The 404 participants’ data showed that among the questionnaire nine factors, the highest and intermediate-range mean were for “Ease of Use” at 19 and 4 and for “Ease of Learning” at 18 and 4. Moreover, they were 13 and 3 for “System Capabilities,” 13 and 2 for “System Usability,” and 10 and 2 for “User Satisfaction.” In addition, “Errors Management” received 10 and 2, “Display” 10 and 2, “System Terms and Information” 8 and 2, and “User Environment Personalization” 5.5 and 3 as their highest and intermediate-range mean, respectively. Most questionnaires did not differ significantly depending on the age variable, meaning that different age groups had similar answers to most factors. The two sexes showed a significant difference in the responses to the “Usefulness of the System,” “Ease of Learning,” and “Display.” A significant difference for other factors was found in examining the relationship between educational level and the questionnaire factors. However, the “Error Management” and “Display” factors did not significantly differ, considering the educational levels.

The results showed that more attention should be paid to ease of use and learning in re-designing this website. However, it is necessary to consider all factors affecting usability.

Since endometriosis is a chronic disease and requires long-term care, it can have a devastating effect on life quality. For this reason, it is necessary to increase awareness and educate women about endometriosis. In this regard, a mobile phone-based endometriosis training program was designed.

The present paper is a development-applied study and was conducted in two stages. In the first stage, to determine the educational content, after reviewing previous studies, the questions obtained were given to eleven gynecologists and reproductive health doctors to measure the necessity and effectiveness of each question. After being designed, the program was provided to 40 women of reproductive age, and the usability of the program was assessed. Data analysis was performed using SPSS 22 software.

The required educational content of the application was presented in five groups and confirmed by specialists. The mean age of women who participated in this study was 32.35 ± 11.70 years. The average score of usability of the program was 8.34 out of 9 points which indicates a "good" level of satisfaction.

Educating women through new popular tools such as mobile phones can play an important role in raising awareness and influencing their treatment. Therefore, designing a mobile phone-based training program in the field of education and awareness for women at risk of endometriosis can be advantageous.

Usability has been defined as the extent to which specific users can efficiently use a product to achieve specific goals. Along with the increased number of the elderly population, there is a need for user-centered products for this group of people. Smartphones are widely used products in modern society. USE (Usefulness, Satisfaction, and Ease of use) questionnaire is an easy-to-use, quick, and accurate instrument to assess product/service usability. Thus, this study was done to determine the validity and reliability of the Farsi version of the USE questionnaire to evaluate the usability of smartphones for elderly users.

The USE questionnaire was developed by Lund (2001) to assess usability, considering four separate dimensions: usefulness, satisfaction, ease of use, and ease of learning. This is a 30-item questionnaire that evaluates usability on a 7-point Likert scale. In order to assess the face and content validity of the questionnaire, a panel of nine experts was asked to rate the relevancy, clarity, simplicity, and necessity of each question using the Likert scale. Subsequently, the Content Validity Ratio (CVR) and Content Validity Index (CVI) were computed. In order to confirm the reliability of the questionnaire, two methods of internal reliability and test-retest reliability were used. In this sense, Cronbach’s alpha was calculated as the measure of internal reliability. Cronbach’s alpha equal to and above 0.7 was considered the minimum acceptable value. To measure the test-retest, 50 old adults (aged 60 years old and above) were asked to answer the questionnaire twice at a two-week interval. Then, the Pearson correlation coefficient was calculated between the two sets of scores. Also, the receiver operating characteristic (ROC) curve was utilized for specifying its sensitivity, specificity, and cut -off point

Based on the comments of the expert panel, CVI scores of all questionnaire items were above 0.78, whereas four items rated less than 0.78 in terms of CVR scores; and, consequently, were removed from the questionnaire. Moreover, according to the reliability assessment results, both internal correlation and test-retest scores obtained acceptable values. Specifically, Cronbach’s alpha coefficient for usefulness, satisfaction, ease of use, and ease of learning were 0.771, 0.862, 0.756, and 0.798, respectively. In the ROC curve, the cut-off point was reported as 4.88 with the sensitivity and specificity of 97.8% and 75%, respectively, and area under the ROC curve at this cut-off point was obtained 81%.

Comparing a product’s characteristics with standards is a prerequisite to determining the level of usability of that product. The Farsi version of the USE questionnaire is a reliable tool for measuring usability with satisfactory validity and reliability. This questionnaire can be used in future studies in smartphone usability.