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Effect of Heat-Illness First-Aid Education on Heat-Emergency Response Knowledge among Outdoor Workers in Nigeria

Abstract

Heat-related illnesses are an important occupational and public health concern among outdoor workers in Nigeria because prolonged exposure to high temperatures, direct sunlight, physical exertion, inadequate hydration, and poorly ventilated work environments may increase the risk of heat cramps, heat exhaustion, heat syncope, and heat stroke. Outdoor workers such as construction workers, agricultural workers, road workers, street vendors, sanitation workers, security personnel, and other workers engaged in physically demanding activities may be particularly vulnerable to heat-related emergencies. Delayed recognition and inappropriate first-aid responses may worsen the condition and increase the risk of serious complications. Limited knowledge of early warning signs, appropriate cooling measures, hydration, emergency referral, and situations requiring urgent medical attention may further increase occupational risks. Heat-illness first-aid education provides an opportunity to equip outdoor workers with practical knowledge for recognizing and responding appropriately to heat-related emergencies. Against this background, this study investigates the effect of heat-illness first-aid education on heat-emergency response knowledge among outdoor workers in Nigeria. The study will be anchored on the Health Belief Model, Social Cognitive Theory, and Protection Motivation Theory. The Health Belief Model explains how outdoor workers' perceptions of susceptibility to heat-related illness, perceived severity, perceived benefits of appropriate first-aid response, perceived barriers, and cues to action may influence their knowledge and emergency-response decisions. Social Cognitive Theory emphasizes observational learning, self-efficacy, workplace influence, reinforcement, and environmental factors in developing appropriate first-aid knowledge and response skills. Protection Motivation Theory emphasizes perceived threat, response efficacy, self-efficacy, and perceived response costs in motivating workers to adopt appropriate protective and emergency-response behaviours. Collectively, these theoretical perspectives provide a suitable framework for explaining how heat-illness first-aid education may influence heat-emergency response knowledge among outdoor workers in Nigeria. The study will adopt a quantitative quasi-experimental or analytical cross-sectional research design. The study population will comprise outdoor workers aged 18 years and above employed in selected urban, semi-urban, and rural communities across Nigeria. A multistage sampling technique will be used to select geopolitical zones, states, local government areas, communities, workplaces, occupational groups, and eligible outdoor workers. Heat-illness first-aid education will be assessed using indicators such as exposure to educational sessions, frequency and duration of training, identification of heat cramps, heat exhaustion, heat syncope, and heat stroke, recognition of warning signs and symptoms, immediate cooling measures, hydration principles, appropriate positioning and rest, removal from heat exposure, use of cool or shaded environments, appropriate emergency referral, communication with supervisors or emergency services, and prevention of further heat exposure. Heat-emergency response knowledge will be assessed using indicators such as ability to identify different heat-related illnesses, recognize severe symptoms, distinguish heat exhaustion from heat stroke, identify appropriate immediate first-aid actions, recognize inappropriate responses, understand when emergency medical care is required, know appropriate cooling procedures, and identify measures for preventing deterioration while awaiting professional care. Data will be collected using structured questionnaires, standardized heat-illness knowledge assessment tools, scenario-based emergency-response questions, first-aid training records, and workplace health and safety records where available. Descriptive statistics will be used to summarize participants' characteristics, occupational heat exposure, previous first-aid training, sources of health and safety information, and levels of heat-emergency response knowledge. Inferential statistical techniques, including chi-square tests, t-tests, correlation analysis, and logistic or multiple regression analysis where appropriate, will be used to determine the effect of heat-illness first-aid education on heat-emergency response knowledge. Where a quasi-experimental design is adopted, knowledge scores before and after the educational intervention may be compared with those of a comparison group to determine changes associated with the intervention. Diagnostic tests will also be conducted to assess the reliability, validity, and robustness of the findings. The study is expected to find that heat-illness first-aid education has a significant positive effect on heat-emergency response knowledge among outdoor workers in Nigeria. Workers exposed to structured and practical first-aid education are expected to demonstrate greater knowledge of heat-related emergencies and appropriate response measures than workers without comparable training. Education may improve recognition of early symptoms and warning signs and help workers distinguish less severe heat-related conditions from potentially life-threatening heat stroke. Practical training may improve workers' knowledge of immediately moving an affected person away from heat exposure, initiating appropriate cooling measures, monitoring the person's condition, and seeking urgent professional medical assistance when severe symptoms are present. It may also strengthen workers' ability to identify inappropriate responses and understand the importance of early action. However, limited access to first-aid resources, inadequate workplace emergency systems, high temperatures, work pressure, low availability of trained safety personnel, and limited access to healthcare facilities may reduce the effectiveness of education alone. The study therefore expects practical, repeated, culturally appropriate, and workplace-based heat-illness first-aid education, supported by appropriate emergency resources and occupational heat-safety policies, to contribute significantly to improved heat-emergency response knowledge among outdoor workers in Nigeria. The study is expected to contribute to the literature on occupational heat exposure, heat-related illness, first aid, emergency preparedness, workplace safety, occupational health, climate-related health risks, health education, and public health in Nigeria. The findings will provide useful information to the Federal Ministry of Health and Social Welfare, Federal Ministry of Labour and Employment, employers, occupational health professionals, emergency-care providers, public health practitioners, environmental health officers, trade and workers' organizations, development partners, and policymakers regarding strategies for reducing heat-related occupational morbidity. The study will also provide evidence-based recommendations for integrating heat-illness first-aid education into workplace health and safety programmes, improving access to first-aid equipment and cooling resources, strengthening occupational heat-emergency response systems, training workplace safety personnel, promoting appropriate hydration and rest practices, developing heat-health action plans, and improving emergency preparedness among outdoor workers across Nigeria.

Keywords: Heat-illness first-aid education, heat-emergency response knowledge, heat-related illness, outdoor workers, occupational heat exposure, first aid, workplace safety, occupational health, heat stroke, Nigeria, public health.