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Introduction Water fetching for household needs can cause injury, but documentation of the burden of harm globally has been limited. We described the frequency, characteristics and correlates of water-fetching injuries in 24 sites in 21 low-income and middle-income countries in Asia, Africa and Latin America and the Caribbean.Methods In a survey of 6291 randomly selected households, respondents reported whether and how they had experienced water-fetching injuries. Responses were coded for injury type, mechanism, bodily location and physical context. We then identified correlates of injury using a multilevel, mixed-effects logistic regression model.Results Thirteen per cent of respondents reported at least one water-fetching injury. Of 879 injuries, fractures and dislocations were the most commonly specified type (29.2%), and falls were the most commonly specified mechanism (76.4%). Where specified, 61.1% of injuries occurred to the lower limbs, and dangerous terrain (69.4%) was the most frequently reported context. Significant correlates included being female (aOR=1.50, 95% CI 1.15 to 1.96); rural (aOR=4.80, 95% CI 2.83 to 8.15) or periurban residence (aOR=2.75, 95% CI 1.64 to 4.60); higher household water insecurity scores (aOR=1.09, 95% CI 1.07 to 1.10) and reliance on surface water (aOR=1.97, 95% CI 1.21 to 3.22) or off-premise water sources that required queueing (aOR=1.72, 95% CI 1.19 to 2.49).Conclusion These data suggest that water-fetching injuries are an underappreciated and largely unmeasured public health challenge. We offer guidelines for comprehensive data collection on injuries to better capture the true burden of inadequate water access. Such data can guide the design of interventions to reduce injury risk and promote equitable water access solutions.

Introduction A wide range of water-related problems contribute to the global burden of disease. Despite the many plausible consequences for health and well-being, there is no validated tool to measure individual- or household-level water insecurity equivalently across varying cultural and ecological settings. Accordingly, we are developing the Household Water Insecurity Experiences (HWISE) Scale to measure household-level water insecurity in multiple contexts.Methods and analysis After domain specification and item development, items were assessed for both content and face validity. Retained items are being asked in surveys in 28 sites globally in which water-related problems have been reported (eg, shortages, excess water and issues with quality), with a target of at least 250 participants from each site. Scale development will draw on analytic methods from both classical test and item response theories and include item reduction and factor structure identification. Scale evaluation will entail assessments of reliability, and predictive, convergent, and discriminant validity, as well as the assessment of differentiation between known groups.Ethics and dissemination Study activities received necessary ethical approvals from institutional review bodies relevant to each site. We anticipate that the final HWISE Scale will be completed by late 2018 and made available through open-access publication. Associated findings will be disseminated to public health professionals, scientists, practitioners and policymakers through peer-reviewed journals, scientific presentations and meetings with various stakeholders. Measures to quantify household food insecurity have transformed policy, research and humanitarian aid efforts globally, and we expect that an analogous measure for household water insecurity will be similarly impactful.

Context: It was observed that the modeling of complex socio-ecological systems based on Agent-Based Simulations has the advantage of allowing the integration of different processes, scales, variables and the possibility to generate scenarios with actors in the context of the modeling with stakeholders. Method: A computational tool for planning and support of decision-making processes related with water resources management, specifically in the case of floods in the Mojana ecoregion (Colombia) is designed along with social participation workshops related with beliefs, values, social networks and resilience. Results: The model has two components: the first one represents the hydrodynamic of flooding by means of the numerical platform ISIS 2D. The second one, regarding the social aspects of the region, is handled via agent systems modeling. Both schemes are integrated into the NetLogo platform. Conclusions: The integrated modeling of complex socio-ecological systems allow us to visualize the behavior of the population and the natural resources in a territory, contributing to the design of policies and educational processes involving different disciplines and actors. Future work will focus on regional modeling and the analysis of the impact produced by the use of these tools.

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