Assessing the feasibility of free DNA for disaster victim identification and forensic applications.

In tropical disaster victim identification (DVI) scenarios, challenging environmental conditions lead to accelerated DNA degradation in remains. To further enhance the utilization of leached DNA from tissue in the preservative solution (termed "free DNA") as an alternative source, we incorporated new results by assessing its integrity in postmortem and decomposing cadavers preserved in DNA/RNA Shield™ and modified TENT, with silica-based purification (QIAquick®) for faster processing. The psoas muscle tissues of one decomposed and ten cadavers were preserved in each solution at 25 °C and 35 °C for 3 months. Free DNA efficiency was compared with individual reference samples for reliable results in quantity, quality, and STR profiles. The findings revealed that DNA/RNA Shield™ effectively preserves free DNA integrity for extended storage, while modified TENT is more suitable for short-term storage due to higher degradation levels. Moreover, the use of free DNA samples with massive parallel sequencing displays potential for forensic DNA analysis. Successful amplification of the mtDNA control region enables variant calling and heteroplasmy analysis while also serving as quality control using ACTB and enabling differentiation within the 16S rRNA region for microbiome analysis. The simplicity of handling free DNA for PCR-based forensic analysis adds to its potential for various applications, including DVI and field-based analysis of biological evidence.

Non-Pharmacological Cooking Therapy: An Idea for Recovering the Mental Health of Adolescents as Disaster Victims of Mount Merapi Natural Eruption in Yogyakarta (Indonesia).

Here discussed is the relevance of non-pharmacological therapy, especially cooking therapy, in supporting the mental health recovery of adolescent disaster victims, especially those affected by the natural eruption of Mount Merapi in Yogyakarta, Indonesia.

Hacia un cambio de paradigma en la atención psicológica en grandes emergencias: de incidentes con múltiples víctimas a incidentes con múltiples afectados / Towards a paradigm shift in psychological care in major emergencies: from incidents with multiple victims to incidents with multiple victims

Las grandes emergencias o desastres plantean grandes retos a la sociedad y en especial a todos los servicios de emergencia. En las últimas décadas, se ha incorporado la perspectiva de la salud mental como una parte importante de la atención sanitaria integral a los afectados. Así, el cambio conceptual de «incidente de múltiples víctimas» (IMV) a «incidente de múltiples afectados» (IMA) se centra en la atención y bienestar de todas las personas afectadas por un incidente, no solo en aquellos que han sufrido lesiones físicas. El objetivo del presente artículo se centra en conocer las posibilidades de intervención con afectados etiquetados en un triaje como verdes psicológicos (sin afectación y/o lesiones físicas), a partir de la intervención psicológica avanzada en emergencias (IPA). La IPA, más allá de alejar a los afectados del peligro, persigue aumentar su sensación de control y eficacia, tanto para afrontar la situación como para aumentar su sentido de competencia en la vivencia de trauma posterior respecto a esa experiencia. En este sentido, las posibilidades recientes de evaluación, así como los enfoques de primeros auxilios psicológicos, permiten nuevas aplicaciones de intervención en emergencias como las que posibilitan los soportes aéreos remotos (drones). Se discute su aplicación y posibilidades como opciones de futuro. (AU)

Major emergencies or disasters pose great challenges to society and especially to all emergency services. In the last decades, the Mental Health perspective has been incorporated as an important part of comprehensive health care for those affected. Thus, the conceptual change from “multiple casualty incident” (MCI) to “multiple affected incident” (MAI) focuses on the care and well-being of all people affected by an incident, not only those who have suffered physical injuries. The objective of this article is focused on finding out the possibilities of intervention with patients labeled in triage as psychological green (without affectation and/or physical injuries), based on advanced psychological intervention in emergencies (IPA). The IPA, beyond removing those affected from danger, seeks to increase their sense of control and efficacy, both to face the situation and to increase their sense of competence in the experience of subsequent trauma with respect to that experience. In this sense, recent assessment possibilities, as well as psychological first aid approaches, allow new intervention applications in emergencies such as those made possible by remote air support (drones). Its application and possibilities as future options are discussed. (AU)

Intervención forense en el accidente de autobús con 13 víctimas mortales en Freginals, Tarragona, España / Forensic intervention in the bus accident with 13 fatalities in Freginals, Tarragona, Spain

La identificación de cadáveres en sucesos con múltiples víctimas es un reto y una de las actividades principales de la patología forense. De la correcta identificación y gestión de identificación se derivan repercusiones legales, humanitarias y sociales generando un gran impacto.El objetivo del presente trabajo es presentar el proceso de gestión e identificación de las 13 víctimas mortales del accidente de autobús ocurrido en la autopista AP7 en marzo de 2016, en Freginals (Tarragona, España). Se analizan las rápidas identificaciones de las víctimas mortales, los diferentes mecanismos de control de calidad empleados, la atención a los familiares, así como la gestión propia de la catástrofe con los recursos humanos y materiales disponibles.A pesar de la nacionalidad extranjera de todas las víctimas, que determinó el método de identificación, todas ellas fueron identificadas rápidamente mediante odontología, huellas dactilares o ADN y fueron rápidamente retornadas a sus familias y países de origen. Italia fue el país de donde procedían un mayor número de víctimas. Se destaca la participación de los médicos forenses en la recuperación de datos antemortem. (AU)

Corpses identification in events with multiple victims is a challenge and one of the main activities of Forensic Pathology. Legal, humanitarian and social repercussions are derived from the correct identification and also its management, generating a great impact.The objective of this paper is to present the management and identification process of the 13 deaths that occurred in the bus accident on the AP7 motorway in March 2016 in Freginals (Tarragona, Spain). The rapid identification of fatalities, the different quality control mechanisms used, attention to family members, as well as the proper management of the catastrophe with the human and material resources available are analysed.Despite the foreign nationality of all the victims, which determined the method of identification, all of them were quickly identified by dentistry, fingerprinting or DNA and were quickly returned to their families and countries of origin. Italy was the country where the largest number of victims came from. The participation of forensic doctors in ante mortem data recovery is highlighted. (AU)

Use of the HESPER Web to Assess Perceived Needs Immediately After Multiple Disaster Events in Fiji.

OBJECTIVE: In January 2022, Fiji was hit by multiple natural disasters, including a cyclone causing flooding, an underwater volcanic eruption, and a tsunami. This study aimed to investigate perceived needs among the disaster-affected people in Fiji and to evaluate the feasibility of the Humanitarian Emergency Settings Perceived Needs Scale (HESPER Web) during the early stage after multiple natural disasters. METHODS: A cross-sectional study using a self-selected, non-representative study sample was conducted. The HESPER Web was used to collect data. RESULTS: In all, 242 people participated. The number of perceived serious needs ranged between 2 and 14 (out of a possible 26), with a mean of 6 (SD = 3). The top 3 most reported needs were access to toilets (60%), care for people in the community who are on their own (55%), and distress (51%). Volunteers reported fewer needs than the general public. CONCLUSIONS: The top 3 needs reported were related to water and sanitation and psychosocial needs. Such needs should not be underestimated in the emergency phase after natural disasters and may require more attention from responding actors. The HESPER Web was considered a usable tool for needs assessment in a sudden onset disaster.

Dental Hygiene and Dental Assistant Students' Simulated DVI Radiographic Match Accuracy: A pilot study.

Purpose Allied dental health care professionals have served on disaster victim identification (DVI) teams; however, the literature is void of statistical measures regarding transferable skills and disaster preparedness. The purpose of this study was to assess second year dental hygiene and dental assistant students' match accuracy for simulated DVI radiographs and compare the match accuracy between the student groups.Methods Five patient cases were chosen at random to retrospectively collect sets of digital bitewing radiographs from two time periods. The five retrospectively selected sets of images served as simulated antemortem (AM) and postmortem (PM) radiographs. A convenience sample of second year dental hygiene and dental assistant students from two institutions (n=48) were invited to participate in this IRB-exempt descriptive observational study. The previously selected AM and PM images were randomly mismatched, and participants were asked to visually compare the image sets and indicate the matches using a drag and drop feature in an electronic survey instrument. Descriptive statistics were used to analyze the data; the significance level was set at α=0.05.Results A total of 41 dental hygiene and dental assistant students agreed to participate for a response rate of 85.4%. Eighty-five percent of the participants accurately matched five out of five sets while the remaining 15% accurately matched three out of five sets. A one-sample binomial proportion test revealed that 80% of the participants were able to match at least four out of five sets (p<0.001). Dental hygiene students demonstrated increased matching performance as compared to dental assisting students (p=0.013).Conclusion Both dental hygiene and dental assistant students demonstrated transferable DVI skills to accurately match simulated AM and PM radiographs. Future research is needed in a larger sample to develop and assess best practices of DVI training to build on existing skills for allied dental health care professionals.

Re-examining so-called 'secondary identifiers' in Disaster Victim Identification (DVI): Why and how are they used?

Disaster victim identification (DVI) refers to the identification of multiple deceased persons following an event that has a catastrophic effect on human lives and living conditions. Identification methods in DVI are typically described as either being primary, which include nuclear genetic markers (DNA), dental radiograph comparisons, and fingerprint comparisons, or secondary, which are all other identifiers and are ordinarily considered insufficient as a sole means of identification. The aim of this paper is to review the concept and definition of so-called 'secondary identifiers" and draw on personal experiences to provide practical recommendations for improved consideration and use. Initially, the concept of secondary identifiers is defined and examples of publications where such identifiers have been used in human rights violation cases and humanitarian emergencies are reviewed. While typically not investigated under a strict DVI framework, the review highlights the idea that non-primary identifiers have proven useful on their own for identifying individuals killed as a result of political, religious, and/or ethnic violence. The use of non-primary identifiers in DVI operations in the published literature is then reviewed. Because there is a plethora of different ways in which secondary identifiers are referenced it was not possible to identify useful search terms. Consequently, a broad literature search (rather than a systematic review) was undertaken. The reviews highlight the potential value of so-called secondary identifiers but more importantly show the need to scrutinise the implied inferior value of non-primary methods which is suggested by the terms "primary" and "secondary". The investigative and evaluative phases of the identification process are examined, and the concept of "uniqueness" is critiqued. The authors suggest that non-primary identifiers may play an important role in providing leads to formulating an identification hypothesis and, using the Bayesian approach of evidence interpretation, may assist in establishing the value of the evidence in guiding the identification effort. A summary of contributions non-primary identifiers may make to DVI efforts is provided. In conclusion, the authors argue that all lines of evidence should be considered because the value of an identifier will depend on the context and the victim population. A series of recommendations are provided for consideration for the use of non-primary identifiers in DVI scenarios.

Deep learning-based classification of adequate sonographic images for self-diagnosing deep vein thrombosis.

BACKGROUND: Pulmonary thromboembolism is a serious disease that often occurs in disaster victims evacuated to shelters. Deep vein thrombosis is the most common reason for pulmonary thromboembolism, and early prevention is important. Medical technicians often perform ultrasonography as part of mobile medical screenings of disaster victims but reaching all isolated and scattered shelters is difficult. Therefore, deep vein thrombosis medical screening methods that can be easily performed by anyone are needed. The purpose of this study was to develop a method to automatically identify cross-sectional images suitable for deep vein thrombosis diagnosis so disaster victims can self-assess their risk of deep vein thrombosis. METHODS: Ultrasonographic images of the popliteal vein were acquired in 20 subjects using stationary and portable ultrasound diagnostic equipment. Images were obtained by frame split from video. Images were classified as "Satisfactory," "Moderately satisfactory," and "Unsatisfactory" according to the level of popliteal vein visualization. Fine-tuning and classification were performed using ResNet101, a deep learning model. RESULTS: Acquiring images with portable ultrasound diagnostic equipment resulted in a classification accuracy of 0.76 and an area under the receiver operating characteristic curve of 0.89. Acquiring images with stationary ultrasound diagnostic equipment resulted in a classification accuracy of 0.73 and an area under the receiver operating characteristic curve of 0.88. CONCLUSION: A method for automatically identifying appropriate diagnostic cross-sectional ultrasonographic images of the popliteal vein was developed. This elemental technology is sufficiently accurate to automatically self-assess the risk of deep vein thrombosis by disaster victims.

Technical note: A mobile collaborative workspace to assist forensic experts in disaster victim identification scenarios.

Integrated approaches to disaster victim identification (DVI) management have led to a need for technologies to improve interaction among parties involved in post-mortem (PM) and ante-mortem (AM) data collection through better communication and coordination. Mobile Forensic Workspace© (MFW) is a collaborative mobile system that not only facilitates the systematic collection of high-quality data, but also allows DVI professionals to coordinate activities and exchange data through secure real-time communication at major disaster scenarios in accordance with security, privacy and legal protocols. MFW is adaptable to any communication format (text, voice calls, photographs, etc.) and is dynamically self-reconfigurable when connectivity problems arise. It also allows data integration and backup through secure communication channels between local and remote servers. The feasibility of the system has been demonstrated through implementation of MFW on the iOS platform for iPhone, iPod Touch and iPad terminals. A further strength of MFW is that it provides out-of-the-box support for INTERPOL DVI forms. The application of information and communication technologies for DVI was shown to be useful in improving DVI management by enhancing the quality of data collection and enabling non-Internet dependent real-time data sharing and communication.

Undergraduate dental students and their potential role in disaster victim identification procedures: A scoping review under a Chilean perspective.

BACKGROUND: A mass fatality incident is an unexpected event that can cause the death of many people, which has motivated careful analysis and development of appropriate strategies for planning and response with all available resources. As these events involve multiple victims, their identities must be confirmed using the highest possible quality standards. Forensic Odontology (FO) has proven to be a scientific resource for disaster victim identification (DVI) procedures; however, it is highly dependent on the proper management not only of material resources but also of human resources. Chile is a country recognised as prone to natural disasters, but an insufficient number of forensic odontologists has been reported. The aim of the study was to review the literature on a dental undergraduate (UG) student's potential value in a DVI process. METHODOLOGY: A scoping review was performed using a specific search strategy in PubMed/Medline, Web of Science, Scopus, SciELO and EBSCO databases. RESULTS: The search identified 27 articles in which the basic dental degree, the necessary training and the need for human resources are variables considered in different priorities by those articles. DISCUSSION: It is vital to assess the local needs of Chile based on its UGs, considering that FO is an underestimated resource that should be included early on in dental curriculums. Furthermore, it should align with public policies to ensure viability and inclusion in standardised protocols. CONCLUSION: Although there is "potential" usage of UG dental students in DVI is not ideal, circumstances will dictate their use. The better trained they are as students, the more valuable their "potential" contribution will be.

Exploring Pathways and Obstacles to Well-Being in Victims of Terrorism: A Qualitative Approach

On March 11, 2004, Madrid suffered one of the worst terrorist attacks in the history of Spain, leaving more than 190 dead and 2,000 injured. For years, the psychological consequences of the attacks have been studied; however, its long-term effects on symptomatology and especially on well-being remains unknown. This study aims to explore, through a qualitative approach, pathways and obstacles to the well-being of those affected directly or indirectly by the attacks of March 11 in Madrid. Two focus groups were held, one for indirect victims and one for direct victims. Subsequently, a thematic analysis of the materials obtained was carried out. More than 10 years after the attacks, most of the participants reported great difficulty in achieving well-being. Acceptance and victims’ associations seemed to act as key facilitators, while symptoms, political institutions and the media were the main obstacles. Direct and indirect victims presented similar data although aspects such as guilt and family relationships played a different role in their well-being. (AU)

Atendimento psicossocial nos serviços de proteção social especial do SUAS / Psychosocial care in the special social protection services of SUAS / Atención psicosocial en los servicios de protección social especial del Sistema Único de Asistencia Social (SUAS)

Documentos normativos determinam que serviços de Proteção Social Especial (PSE) do Sistema Único de Assistência Social (SUAS) devem oferecer atendimento psicossocial às(aos) usuárias(os). No entanto, não especificam que atendimento é esse, que tipo de atividades ele inclui, porque ele caracteriza principalmente serviços da PSE ou o que o diferencia das outras atividades desenvolvidas pelas equipes desses serviços. Diante disso, neste artigo, buscamos responder às seguintes questões: como profissionais que atuam nas equipes técnicas ou na gestão de serviços de proteção social especial do município de São Paulo compreendem a noção de "atendimento psicossocial"? E como essa noção é convertida em práticas concretas de intervenção? Para respondê-las, realizamos uma pesquisa bibliográfica e documental, bem como fizemos 10 entrevistas semiestruturadas com profissionais da PSE. As entrevistas e documentos analisados indicam a polissemia da expressão atendimento psicossocial. Ora ela refere-se a determinadas práticas ou ações que fazem parte do cotidiano dos serviços do SUAS; ora a um aspecto ou uma visão que norteia o trabalho. Indicam, ainda, que tal forma de atendimento é caracterizada, entre outras coisas, por sua interdisciplinaridade, pela importância que dá ao contexto e ao território e por não ser equivalente à clínica psicoterápica tradicional.(AU)

Regulatory documents determine that Special Social Protection (PSE) services of the Unified Social Assistance System (SUAS) must offer psychosocial support to its users. However, they do not specify which support, what type of activities it includes, why it mainly characterizes PSE services or what differentiates it from other activities developed by teams in these services. Given this, in this article, we seek to answer the following questions: how do professionals working in the technical teams or in the management of special social protection services in the municipality of São Paulo understand the notion of "psychosocial support"? And how is this notion converted into concrete intervention practices? To answer them, we conducted a bibliographic and documentary research, as well as 10 semi-structured interviews with professionals from PSE services. The interviews and documents analyzed indicate the polysemy of the expression psychosocial support. At times, it refers to certain practices or actions that are part of the daily routine of SUAS services; at other times, it refers to an aspect or vision that guides the work. They also indicate that this form of support is characterized, among other things, by its interdisciplinary nature, by the importance given to context and territory and by not being equivalent to the traditional psychotherapeutic clinic.(AU)

Los documentos normativos determinan que los servicios de Protección Social Especial (PSE) del Sistema Único de Asistencia Social (SUAS) deben ofrecer atención psicosocial a los usuarios. Sin embargo, no especifican en qué consiste esta atención, qué tipo de actividades incluye, por qué caracteriza principalmente a los servicios de PSE o qué lo diferencia de otras actividades desarrolladas por los equipos de estos servicios. Teniendo esto en cuenta, en este artículo buscamos responder a las siguientes preguntas: ¿Qué piensan sobre la noción de "atención psicosocial" los profesionales que trabajan en los equipos técnicos o en la gestión de los servicios de protección social especial en el municipio de São Paulo? ¿Y cómo convierten esta noción en prácticas concretas de intervención? Para responderlas, realizamos una investigación bibliográfica y documental, así como diez entrevistas semiestructuradas con profesionales de la PSE. Las entrevistas y los documentos analizados indican la polisemia de la expresión atención psicosocial. A veces, se refiere a ciertas prácticas o acciones que forman parte de la rutina diaria de los servicios del SUAS; otras veces, a un aspecto o visión que guía el trabajo. También esta forma de atención se caracteriza, entre otras cosas, por su interdisciplinariedad, por la importancia que se da al contexto y al territorio, y por no ser equivalente a la clínica psicoterapéutica tradicional.(AU)

New Method of Dental Personal Identification of Disaster Victims Using Oral Scanner.

Dentistry plays an important role in the identification of victims in large-scale disasters. The current poor status of and problems with victim identification work were highlighted in the aftermath of the Great East Japan Earthquake of March 11, 2011, in which some 10,000 people lost their lives. The techniques of dental identification therefore need to be improved if they are to cope with the problems associated with identification that will accompany the predicted Tokai earthquake and other unexpected large-scale disasters in the future. The purpose of this study was to determine the effectiveness of applying a digital impression-taking device employed in regular dental care to dental personal identification. The Trophy 3DI pro (Yoshida Dental) was applied to a total of 150 dental models. The diagnosis was accurate in 2,096 teeth from a sample of 2,100 comprising 1,240 non-treated teeth, 670 treated teeth, and 190 missing teeth, yielding a 99.8% level of statistical precision. These results suggest that the level of accuracy offered by this impression-taking device indicates that it would be a useful tool in establishing personal identification in disaster victims.

Posttraumatic Stress Symptoms, Physical Illness, and Social Adjustment Among Disaster Victims.

OBJECTIVE: Posttraumatic stress disorder is one of the most studied outcomes after a disaster. Posttraumatic stress symptoms (PTSS) are maladaptive and disabling and can severely impair affected individuals' psychosocial functioning and quality of life. Consequently, the objective of this research is to investigate the prevalence of PTSS and physical illness among disaster victims. METHODS: We analyzed disaster victims' survey data in South Korea 1 year after a natural disaster (n = 1659). Then, we performed multivariable comparisons of social and work adjustments between individuals with PTSS and individuals with physical illness to examine the association between PTSS and functional impairment. RESULTS: Individuals with PTSS had a significant association with work and social maladjustments whether or not they had a physical illness; PTSS (+) physical illness (-) group (OR: 1.18, CI: 1.12-1.26, P < 0.001) and PTSS (+) physical illness (+) group (OR: 1.16, CI: 1.08-1.23, P < 0.001). Interestingly, this association was not significant in the group that exclusively presented physical illness. CONCLUSIONS: Our results suggest that PTSS might be a critical factor in social maladjustment during the post-disaster period. Subsequently, an assessment of disaster victims' PTSS would help ensure effective medical and governmental approaches to assist disaster victims.

Subjective Wellbeing and Related Factors of Older Adults Nine and a Half Years after the Great East Japan Earthquake: A Cross-Sectional Study in the Coastal Area of Soma City.

This study examined older adults' subjective wellbeing and related factors in the coastal area of Soma City nine and a half years after the Great East Japan Earthquake (GEJE). Data were collected from 65- to 84-year-old residents and 1297 participants via a questionnaire from October to November 2020. The participants were divided into two groups: housing complexes and non-housing complexes. The dependent variable was subjective wellbeing assessed via Lawton's Philadelphia Geriatric Center Morale Scale (PGCMS). Using multivariate regression analysis, the factors most strongly related to a low PGCMS score for both groups were poor health conditions, difficulties resting while asleep, poor financial wellbeing, inability to chew certain foods, and fear of solitary death. The GEJE experience was further distinguished in the housing complex group by the loss of an important non-family individual; for the other group, important factors were female gender, junior high school education level or lower, limited social networks, and deterioration of a family member's health. Older adults' subjective wellbeing in Soma City was low after nine and a half years following the GEJE. For disaster victims and their families in both groups, it is crucial to implement measures such as long-term, continuous physical and mental health support.

Rapid DNA from a disaster victim identification perspective: Is it a game changer?

As an emerging technology, Rapid DNA has demonstrated its utility for law enforcement in the provision of DNA profiling data at the point of arrest, often not requiring analyst review of the profiles generated. Recently, efforts have centred on the evaluation of Rapid DNA (without analyst review) and modified Rapid DNA (requiring review by a trained analyst) for application to crime scene samples. In a broader forensic context, however, another application for Rapid DNA is its use to process post-mortem samples to assist with the identification of deceased persons; and while gaps in our knowledge remain as to how Rapid DNA instruments perform with these sample types (often compromised with regards to their yield and quality of DNA), they have been successfully deployed in the field to assist in the identification of disaster victims (as exemplified during the 2018 Californian wildfire). This review aims to provide the current research landscape for the forensic application of Rapid DNA as an emerging technology from a Disaster Victim Identification perspective.

A disaster victim identification workshop focused on forensic odontology using embalmed human remains.

A high number of victims of mass casualty incidences are identified through their teeth. While forensic odontologists need to have a complex skillset during a disaster victim identification (DVI) response, hands-on training opportunities are rare. In countries with very limited forensic casework, such as New Zealand, many forensic odontologists find it difficult to achieve the number of annual forensic dental identifications required to maintain their credentialling. This report details the development of a hands-on forensic odontology-focused DVI workshop using human Crosado-embalmed remains. Anonymous participant evaluations, including five-point Likert and open-ended items, were performed in both years the workshop was held. A total of 10 and 17 participants, predominantly dentists, attended the workshop in 2020 and 2021, respectively. Participant feedback was extremely positive. Likert items were statistically similar between participants in both years. Open-ended items revealed positive feedback regarding the use of cadaveric remains, the gained hands-on experience, or the teamwork aspect. Participants who attended the workshop in both years commented on the positive aspect of repetition to cement their skills. As areas of improvement, participants named (for example) time management and the number of portable X-ray devices, leading to changes that were implemented in 2021. Moreover, the participants expressed interest to further their skills on decomposed, burnt, and fragmented human remains, which for ethical reasons has yet to be implemented. The DVI workshop described here, using embalmed human remains, provides an opportunity to add dental identifications toward annual credentialling requirements for forensic odontologists. Participants rated the course to be excellent overall and highly relevant for their role. For future workshops, there is an interest to include further aspects of the DVI response such as fingerprinting or police work as well as remains, which are altered due to natural or physical reasons.

The 2018 Japan Floods Increased Prescriptions of Antidementia Drugs Among Disaster Victims.

OBJECTIVES: Natural disasters can impair the cognitive function of older victims. However, it is unknown whether such natural disasters affect drug treatment for dementia. The aim of this study was to evaluate the effect of the 2018 Japan Floods, the second largest water-related disaster in Japan, on the prescriptions of antidementia drugs (ADD) for older people (≥65 years of age). DESIGN: Retrospective cohort study. SETTING AND PARTICIPANTS: Prescription data in Hiroshima, Okayama, and Ehime prefectures for 1 year before and after the disaster were extracted from the National Database of Health Insurance Claims. From the database, we selected 1,710,119 people age 65 years or over as the study participants. METHODS: In logistic regression models, sex- and age-adjusted odds ratios (ORs) of victims for new ADD prescriptions were calculated. Trends for the ORs before and after the disaster were evaluated using difference-in-difference models. Whether or not there was an increase in the trend for ADD prescriptions (daily dose or number of drug types) was also evaluated among continuous ADD users. RESULTS: Among 1,710,119 participants, 15,994 (0.9%) were recorded as a disaster-victims, and 112,289 (6.6%) were prescribed ADD. Among original nonusers, after the disaster, victims were more likely to start using ADD than nonvictims who had not been affected [adjusted OR = 1.33 (95% CI 1.16-1.52)]. Among continuous users, an increasing trend for ADD prescriptions was more often observed for victims than nonvictims [1.61 (1.13-2.31)]. This effect was robust even after the predisaster trend of ADD use was taken into consideration. CONCLUSIONS AND IMPLICATIONS: The disaster increased the number of users of antidementia medications. The findings suggest the need for evidence-based recommendations to address cognitive impairment among disaster victims, which is lacking in current clinical and disaster guidelines worldwide.