Flow diagram analysis of electrical fatalities in construction industry

The current study reanalyzed 250 electrical fatalities in the construction industry from 1996 to 2002 into seven patterns based on source of electricity (power line, energized equipment, improperly installed or damaged equipment), direct contact or indirect contact through some source of injury (boom vehicle, metal bar or pipe, and other conductive material). Each fatality was coded in terms of age, company size, experience, performing tasks, source of injury, accident cause and hazard pattern. The Chi-square Automatic Interaction Detector (CHAID) was applied to the coded data of the fatal electrocution to find a subset of predictors that might derive meaningful classifications or accidents scenarios. A series of Flow Diagrams was constructed based on CHAID result to illustrate the flow of electricity travelling from electrical source to human body. Each of the flow diagrams can be directly linked with feasible prevention strategies by cutting the flow of electricity.     

Exploring user experience and technology acceptance for a fall prevention system: results from a randomized clinical trial and a living lab

Background

Falls are common in older adults and can result in serious injuries. Due to demographic changes, falls and related healthcare costs are likely to increase over the next years. Participation and motivation of older adults in fall prevention measures remain a challenge. The iStoppFalls project developed an information and communication technology (ICT)-based system for older adults to use at home in order to reduce common fall risk factors such as impaired balance and muscle weakness. The system aims at increasing older adults’ motivation to participate in ICT-based fall prevention measures. This article reports on usability, user-experience and user-acceptance aspects affecting the use of the iStoppFalls system by older adults.

Methods

In the course of a 16-week international multicenter study, 153 community-dwelling older adults aged 65+ participated in the iStoppFalls randomized controlled trial, of which half used the system in their home to exercise and assess their risk of falling. During the study, 60 participants completed questionnaires regarding the usability, user experience and user acceptance of the iStoppFalls system. Usability was measured with the System Usability Scale (SUS). For user experience the Physical Activity Enjoyment Scale (PACES) was applied. User acceptance was assessed with the Dynamic Acceptance Model for the Re-evaluation of Technologies (DART). To collect more detailed data on usability, user experience and user acceptance, additional qualitative interviews and observations were conducted with participants.

Results

Participants evaluated the usability of the system with an overall score of 62 (Standard Deviation, SD 15.58) out of 100, which suggests good usability. Most users enjoyed the iStoppFalls games and assessments, as shown by the overall PACES score of 31 (SD 8.03). With a score of 0.87 (SD 0.26), user acceptance results showed that participants accepted the iStoppFalls system for use in their own home. Interview data suggested that certain factors such as motivation, complexity or graphical design were different for gender and age.

Conclusions

The results suggest that the iStoppFalls system has good usability, user experience and user acceptance. It will be important to take these along with factors such as motivation, gender and age into consideration when designing and further developing ICT-based fall prevention systems.

     

Mandatory seat belt laws in the states. A study of fatal and severe occupant injuries

This study examines the impact of mandatory seat belt laws on fatal and incapacitating injury rates in the states. Annual data for all 50 states for the period 1975-1991 are used. Pooled time series analysis is employed. The general conclusion that emerges from this analysis is that seat belt laws significantly impact state fatal injury rates. Primary enforcement and all-seat coverage provisions appear to be particularly effective in reducing fatality rates.     

Tractor accidents in Swedish traffic

The objective of this study is to reach a better understanding of accidents on Swedish roads involving tractors and to suggest ways of preventing them. In an earlier study we analyzed police-reported fatal accidents and accidents that led to physical injuries from 1992 to 2005. During each year of this period, tractors were involved in 128 traffic accidents on average, an average of 7 people were killed, 44 sustained serious injuries, and 143 sustained slight injuries. The number of fatalities in these tractor accidents was about 1.3% of all deaths in traffic accidents in Sweden. Cars were most often involved in the tractor accidents (58%) and 15% were single vehicle accidents. The mean age of the tractor driver involved was 39.8 years and young drivers (15-24 years) were overrepresented (30%). We are now increasing the data collected with the years 2006-2010 in order to study the changes in the number of accidents. Special attention will be given to the younger drivers and to single vehicle accidents. Based on the results we aim to develop suggestions for reducing road accidents, e.g. including measures for making farm vehicles more visible and improvement of the training provided at driving schools.     

EARLY EVIDENCE ON RECREATIONAL MARIJUANA LEGALIZATION AND TRAFFIC FATALITIES

Over the last few years, marijuana has become legally available for recreational use to roughly a quarter of Americans. Policy makers have long expressed concerns about the substantial external costs of alcohol, and similar costs could come with the liberalization of marijuana policy. Indeed, the fraction of fatal accidents in which at least one driver tested positive for tetrahydrocannabinol has increased nationwide by an average of 10% from 2013 to 2016. For Colorado and Washington, both of which legalized marijuana in 2014, these increases were 92% and 28%, respectively. However, identifying a causal effect is difficult due to the presence of significant confounding factors. We test for a causal effect of marijuana legalization on traffic fatalities in Colorado and Washington with a synthetic control approach using records on fatal traffic accidents from 2000 to 2016. We find the synthetic control groups saw similar changes in marijuana-related, alcohol-related, and overall traffic fatality rates despite not legalizing recreational marijuana. (JEL K42, I12, I18)     

Accident Prevention Among the Elderly

In 1980 the World Health Organization (WHO) published a set of health targets to guide the health policy of its member states as part of its "Health For All by the Year 2000" (HFA-2000) initiatives. However, the translation of health targets into health and social program guidelines is a complex process. This paper illustrates this process through an analysis related to accident prevention among the elderly as conducted by Israeli researchers. Several types of comparative data were used in the analysis. First, the health policy guidelines published by WHO, the United States, and Israel were compared along specific parameters. Then, mortality statistics on accidents among those aged 65 and over were compared for Israel, the United States, Sweden, and Ireland in order to examine the different components of mortaliiy and suggest different priorities for accident prevention. Specific health policy recommendations made to prevent accidents among Israeli elderly are noted; they are compared to those adopted by Israel's Ministry of Health. Finally, exemplary community accident prevention programs from several countries that can serve as models for translating general targets into specific social programs are described.     

Using the ICF as a conceptual framework to guide ergonomic intervention in occupational rehabilitation

Traditional treatment of work-related musculoskeletal disorders focuses on the body functions and body structures aspects of the injury, with little or no attention paid to ergonomics as a form of treatment. The use of ergonomics in preventing disability in injured workers is a relatively new area of study. There are a number of factors that may contribute to the lack of emphasis on ergonomic interventions in the prevention of disability following musculoskeletal injury. For instance, a review of the knowledge base suggests that there is a lack of a formal conceptualization or standardized approach to ergonomics in the return to work process. In part, this lack of consistency may be due to the varied disciplinary backgrounds of ergonomists, leading individuals to view ergonomics from a specific perspective, rather than utilizing a transdisciplinary approach. The purpose of this paper is to introduce a new practice model of occupational rehabilitation ergonomics. The model draws upon the International Classification of Functioning, Disability, and Health (ICF) and merges this with basic ergonomic and rehabilitation principles.     

Access Denied: The Relationship between Alcohol Prohibition and Driving under the Influence

Alcohol prohibition continues to be a policy pursued by more than 10 percent of the counties in the United States. However, many questions exist about the effectiveness of prohibition policies for controlling social maladies such as accidents and fatal injuries related to driving under the influence (DUI). In this research, a situational crime prevention framework is used to evaluate the hypothetical relationship between countywide alcohol prohibition and incidents of DUI. We focus specifically on county-level comparisons of DUI arrests in Arkansas where slightly more than half of the counties are "dry" (sale of alcohol to the general public is prohibited). Utilizing police reports of DUI arrests we examine whether the dry county distinction is indeed associated with fewer DUI arrests than found in wet counties. Findings indicate that the dry county distinction does not result in significantly lower rates of DUI arrest when law enforcement variables are considered. These findings are analyzed and implications for future research are discussed.     

The effect of individually adjusted workstations on upper quadrant posture and muscle activity in school children

Evidence suggests there is increasing use of computers by children and poor workstation designs for children. This laboratory study investigated the effect of adjusting computer display height and desk height on upper quadrant posture and muscle activity. Thirty three children aged 4-17 years worked on a desktop computer at a standard school workstation and at a workstation adjusted to the individual, typically consisting of a lower display and desk height. The adjustments resulted in increased head tilt, neck flexion, gaze angle, cervical erector spinae activity and a trend for lower right upper trapezius activity. The recent evidence that suggests more head and neck flexion is not necessarily worse is discussed and normative values for children's head tilt and neck flexion presented. The role of forearm support in decreasing trapezius activity is also discussed.     

Evidence-Based Evaluation of Staircase Architectural Design to Reduce the Risk of Falling for Older Adults

The impact of an increasingly aging population warrants accommodations in home architectural design. Focusing on the staircase design criteria as part of the home environment, this article presents an integrated evidence-based staircase evaluation for home staircase design to reduce the risk of falling for older adults (those 65 years and older). The staircase evaluation has been developed by dividing the staircase into four design elements: handrail design, step design, staircase geometric design, and lighting. Each element is divided into several features that define its architectural design. For example, the step design element is further divided into four features: going depth, riser height, nosing, and step finishing material. A hierarchical list is provided based on an evidence-based comparison of various scenarios for each feature. The hierarchical list presents the comparative effect of each scenario on reducing the risk of falling for older adults.     

Changes in human cervical and lumbar spine curves while bicycling with different handlebar heights

Cycling is a daily activity that needs a high demand of human-bicycle fitness. However, studies into the fitness or ergonomic aspects are very little. In this study, the simulated 20 min bicycling test were performed by 26 male participants under 5 handle height conditions. Body joint angles and external cervical/lumbar spine lordosis were measured at the initial and cycling after 20 min. Results show that different handle heights did cause various trunk inclinations. Trunk inclination was negatively and positively correlated with lumbosacral angle (r = -0.620, p < 0.001) and cervical angle (r = 0.510, p < 0.001), respectively. In this study, regression models were also developed to predict the internal cervical and lumbar spine movements by external trunk inclination and head extension, respectively. The explanatory abilities for the variance of the models were 67.2% for LSA and 82.8% for CE prediction. This can be used to understand the cyclist's spine movements while field study of bicycling.     

AIDS Prevention via Computer-Based Intervention

The dangers posed by AIDS and the human immunodeficiency virus (HIV) are well known. Government, media, and medical organizations have provided extensive information on AIDS and on how to protect oneself against infection. Nevertheless, this fatal and irreversible disease continues to claim new victims. Clearly, there is an urgent need to develop new methods of educating the public about AIDS prevention. This paper reviews a new, interactive microcomputer approach to educating at-risk adolescents about AIDS. Emphasizing culturally sensitive and interactive approaches to prevention, the authors describe, illustrate, and assess interactive strategies and computer-based content for reducing the risks of AIDS and HIV among Black and Hispanic youth.     

Extent and sources of occupational stress in university staff

Canadian higher education sector has undergone numerous changes during the past decades. Increased student enrolments, massive cuts in human resources and constant restructuring are changes likely to have had a considerable impact on all employees (e.g., administrative, trades, and faculty). While many studies conducted in different countries have shown that stress in universities is a problem of alarming proportions, to date, no study of the entire staff of a university has been carried out in Canada. This research uses an approach based on the prevention and management of the sources of occupational stress to study 1086 employees of a Quebec university. Data were collected by means of questionnaires and semi-structured interviews. It was found that the proportion of individuals who reported a high level of psychological distress was twice as high (40%) than that reported for a Quebec-wide sample (20%). Work overload, the relationship with one's superior and participation in decision making were systematically reported as high risks to employees' health. It was found that human resources management practices have not followed the rapid organizational changes which affected the university in the past years. The results are discussed in light of the risk management approach.     

Mind the Gap,Please! The Effect of Temporary Help Agencies on the Consequences of Work Accidents

Using data from a Spanish register on work-related accidents, this paper analyses the effect of contract types on two consequences of accidents: the probability of suffering a serious/fatal accident and the number of working days lost after an accident has happened. The focus is on the difference among temporary workers hired through temporary help agencies, direct temporary workers and open-ended workers. We find that workers hired through temporary help agencies are less likely to suffer serious/fatal accidents and the durations of their absences are shorter when they do, compared with workers holding either open-ended contracts or direct temporary contracts once personal, job and accident characteristics are controlled for.     

Gastroenteritis: A Grass Root Approach

A Pilot Project was conducted in a "Katchi-Abadi’ (squatter-settlement)of Karachi, Pakistan, using minimum resources and funds. Itwas attempted to reduce the morbidity and mortality due to gastro-enteritisby health education, regarding the role of sanitation and breast-feedingin the prevention of gastroenteritis and propagating the useof ORS for its management. Only four resource personnel wereused to propagate information to one hundred households. A baselinesurvey indicated that the incidence of diarrhoea was highestin children between 6 months to 1 year old (42.9%). Gastroenteritisaccounted for 25% of all deaths in children up to 5 years. A"post-intervention" survey carried out after imparting healtheducation revealed a significant difference in the incidenceof gastroenteritis between the intervention and "control" groups.Other variables considered including literacy and family sizedid not influence the incidence of diarrhoea. Similar resultswere seen when a significant difference of p < .05 was foundbetween the "intervention" and "control" groups regarding theproper management of acute diarrhoea i.e. proper use of ORS.Thus our pilot project succeeded in altering the awareness andpractices of the community regarding both prevention and managementof Acute Gastroenteritis.     

Role of physical activity in the prevention of falls and their consequences in the elderly

This work aims to provide an inventory of the risk factors and consequences of falling in the elderly, namely fractures, and to identify strategies to prevent falls and minimise their effects. Falls in elderly people are a major cause of injuries, leading to a general fear of falling, poorer quality of life and even death. The increase in life expectancy brought by developments in the medical and health sciences has not always brought enhanced quality of life. More elderly people live with reduced functional capacities resulting in a higher prevalence of falls and associated problems for themselves and for society. Risk factors for falling, commonly resulting from normal aging processes, have already been identified through multiple studies. Exercise may play an important role in fall prevention and their consequences. Although, effective strategies are usually multi-disciplinary and focus simultaneously on several risk factors. However, only large-scale prevention programmes can have significant effective social impact. To minimise occurrence and consequences of falls, policies to systematically implement prevention programmes should be established.     

Human factors identification and classification related to accidents'causality on hand injuries in the manufacturing industry

The causes of occupational accidents from the perspective of human factors have been a subject which has received little attention into the field of scientific research. The aim of this research was to identify and classify the human factors that influence human errors and failures that cause accidents and injuries specifically on hands. Available studies related to the topic have been developed mainly for aerospace applications and are found insufficient to explain accidents causalities in the manufacturing industry. This research was developed in the assembly industry of automotive harnesses and was conducted following a mixed Cognitive Anthropological approach. This study was developed in two phases. During the first qualitative phase, participants freely listed their knowledge to identify elements of the cultural domain, then and in the second phase they performed the successive pile sort technique for the collection data to classify elements in the cultural domain. Statistical models like Cluster Analysis and Multidimensional Scaling were applied for results' validation purposes. As results, 70 different human factors were identified and in the second phase they were classified into 4 main categories which were: human error, unsafe conditions, individual factors, and organizational factors. Statistical methods validated these results.     

Exercise intervention designed to improve strength and dynamic balance among community-dwelling older adults

Loss of balance and falling are critical concerns for older adults. Physical activity can improve balance and decrease the risk of falling. The purpose of this study was to evaluate a simple, low-cost exercise program for community-dwelling older adults. Sixteen senior adults were evaluated using the Senior Fitness Test for measures of functional strength, aerobic endurance, dynamic balance and agility, and flexibility. In addition, measures of height, weight, resting blood pressure, blood lipids, and cognitive function were obtained. Participants then attended a 10-week exercise class including stretching, strengthening, and balance-training exercises. At the completion of the program, significant improvements were observed in tests measuring dynamic balance and agility, lower and upper extremity strength, and upper extremity flexibility. The results indicate that exercise programs such as this are an effective, low-cost solution to improving health and factors that affect falling risk among older adults.     

Accidents related to the use of products and services in the city of São Luis, Brazil

This article presents a study on the accidents related to the use of products and services, as recorded at two emergency hospitals at the city S?o Luís, Brazil. The goal of the study was to evaluate the main types and causes of unintentional accidents as well as the more frequent injuries for further improvement of products and services. The study evaluated the victims profile (gender and age), the circumstances (activity, local and time) that lead to the accidents and the type of resulted injury. Non-parametric statistics showed that 83.64% of the accidents were related to products (57.6% of them being consumer products) and 8.6% are related to maintenance services. 57.6% of the victims were children under 15 years old, and 58.4% were male. 50.2% of accidents occurred at home, more often (44.7%) in the afternoon. The most common injury was musculoesqueletal (48.6%), 49.0% being cranioencephalic trauma and 15.2% fractures.     

Using practical ergonomic evaluations in the restaurant industry to enhance safety and comfort: a case study

Restaurant employees must deal with loud noise, busy environments, difficult customers, heavy, awkward, sharp, and hot objects, repetitive motions, and stress on various joints, all of which can lead to fatigue, sudden accidents, and longterm musculoskeletal injury. The goal of this case study was to assess the risk of injuries and accidents from conducting various tasks in the restaurant, specifically carrying/lifting, table management, and polishing silverware. The nine participants were servers at a local country club restaurant. Physical workload was measured by a scale of physical exertion. Cognitive workload was assessed, as well as cumulative trauma disorder risk. Overall results show that there is sufficient risk in some of the tasks to warrant concern. Specific results are discussed, as well as recommendations for improved safety.