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- Jonsson, Anders, 1967-, et al.
(författare)
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Assessing the number of fire fatalities in a defined population
- 2015
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Ingår i: Journal of Safety Research. - : Elsevier. - 0022-4375 .- 1879-1247. ; 55, s. 99-103
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Tidskriftsartikel (refereegranskat)abstract
- Introduction: Fire-related fatalities and injuries have become a growing governmental concern in Sweden, and a national vision zero strategy has been adopted stating that nobody should get killed or seriously injured from fires. There is considerable uncertainty, however, regarding the numbers of both deaths and injuries due to fires. Different national sources present different numbers, even on deaths, which obstructs reliable surveillance of the problem over time. We assume the situation is similar in other countries. This study seeks to assess the true number of fire-related deaths in Sweden by combining sources, and to verify the coverage of each individual source. By doing so, we also wish to demonstrate the possibilities of improved surveillance practices. Method: Data from three national sources were collected and matched; a special database on fatal fires held by The Swedish Contingencies Agency (nationally responsible for fire prevention), a database on forensic medical examinations held by the National Board of Forensic Medicine, and the cause of death register held by the Swedish National Board of Health and Welfare. Results: The results disclose considerable underreporting in the single sources. The national database on fatal fires, serving as the principal source for policymaking on fireprevention matters, underestimates the true situation by 20 %. Its coverage of residential fires appears to be better than other fires. Conclusions: Systematic safety work and informed policy-making presuppose access to correct and reliable numbers. By combining several different sources, as suggested in this study, the national database on fatal fires is now considerably improved and includes regular matching with complementary sources.
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| 3. |
- Jonsson, Anders, 1967-
(författare)
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Dödsbränder i Sverige : En analys av datakvalitet, orsaker och riskmönster
- 2018
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Risken att omkomma genom brand har mer än halverats under de senaste 60 åren i Sverige. Det är idag mycket ovanligt att små barn omkommer i brand men samma positiva utveckling kan inte ses för de äldre. En åldrande befolkning som i ökande omfattning förväntas bo kvar hemma innebär att denna grupp måste prioriteras i framtida brandskyddsarbete. Sambearbetning av data från tre nationella register visar att rutinmässigt framtagen statistik systematiskt underskattar den verkliga situationen. Män, äldre, ensamboende och ekonomiskt svaga är särskilt riskutsatta grupper att omkomma vid bostadsbränder och förekomst av alkohol bland offren är mycket vanligt. Den i särklass vanligaste brandorsaken är rökning. Trots att varje dödsbrand är unik kan det omfattande materialet beskrivas av relativt få och tydligt avgränsade typer av händelser som var och en måste mötas med relevanta preventiva insatser. Avhandlingen visar att dödsbränder i bostäder i huvudsak är ett socialt problem och att det kommer att krävas uthålliga och breda strategier, bestående både av sociala och tekniska åtgärder för att skydda de mest riskutsatta och sårbara människorna i samhället.
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| 4. |
- Jonsson, Anders, 1967-
(författare)
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Dödsfall i Sverige till följd av brand : Omfattning och historiska trender
- 2016
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Ingen ska omkomma eller skadas svårt till följd av brand. Så lyder den nollvision som Myndigheten för Samhällsskydd och Beredskap har formulerat för brandskyddsområdet. Visionen ingår i en nationell strategi för att stärka brandskyddet för den enskilde och innehåller förutom vision tydliga mål. Ett målstyrt arbete måste vägledas av kunskap om problemets omfattning, orsaker och riskfaktorer. Likaså är det av stor vikt att ha kunskap om den historiska utvecklingen och rådande trend. Syftet med denna licentiatuppsats är att undersöka förekomst och historisk utveckling av brandrelaterade dödsfall Sverige. Data från tre olika nationella register har använts: Dödsbrandsdatabasen, Dödsorsaksregistret, och Registret över rättsmedicinska undersökningar. Vi har härigenom kunnat visa att den rutinmässigt framtagna statistiken från enskilda register systematiskt underskattar den verkliga situationen med 20-25%. Den historiska analysen visar att risken att omkomma genom brand har mer än halverats under de senaste 60 åren i Sverige. Den största minskningen gäller små barn och det är idag mycket ovanligt att små barn omkommer i brand. Risken har inte minskat i samma utsträckning bland äldre och en åldrande befolkning innebär att denna grupp måste prioriteras i framtida brandskyddsarbete.
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| 6. |
- Jonsson, Anders, 1967-, et al.
(författare)
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Identifying sociodemographic risk factors associated with residential fire-related fatalities : A matched case control study
- 2020
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Ingår i: Injury Prevention. - : BMJ Publishing Group Ltd. - 1353-8047 .- 1475-5785. ; :2, s. 147-152
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Tidskriftsartikel (refereegranskat)abstract
- Objectives: This study aimed to investigate the association between sociodemographic factors and residential fire fatalities in Sweden. A majority of fatal fires occur in housing. An understanding of risk factors and risk groups is a must for well-Founded decisions regarding targeted prevention efforts. There is a lack of consideration of the interrelation between sociodemographic factors and fire fatalities and there is a lack of high quality large-Scale studies. Methods: In this matched case-Control study, residential fire fatalities (cases, n=850) (age above 19 years old) were identified in the national register on fatal fires. Four controls per case were randomly matched by gender and age. ORs were calculated to assess the association between different sociodemographic factors with residential fire fatalities using conditional logistic regression. Results: Having low income, receiving social allowance and receiving health-Related early retirement pension were associated with an increased risk of dying in residential fires. The results also show clearly that adults dying in residential fires to a significantly lower extent were living together with a partner, were in work, were highly educated and lived in urban areas. However, contrary to previous research, living in rented apartments appeared not to influence the risk of death. Conclusions: In this study, we show that fatalities due to residential fires in Sweden are associated with some but not all of previously published sociodemographic risk factors. The results provide valuable information that can improve the guiding and targeting of fire mortality prevention strategies in Sweden.
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| 7. |
- Jonsson, Anders, 1967-
(författare)
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Regulation of Glutamine Synthetase in the Diazotroph Rhodospirillum rubrum
- 2007
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The bacterial cell needs ammonia for synthesis of glutamine from glutamate. Only one enzyme is able to catalyze this reaction, namely glutamine synthetase (GS). GS can be regulated both transcriptionally and post-translationally and it is present in all kingdoms of life. Our study has been focused on the post-translational regulation of GS in the diazotrophic bacterium Rhodospirillum rubrum. A number of proteins are involved in the covalent regulation of GS, among them are the regulatory PII proteins that depending on growth conditions also like GS are covalently modified. We have purified all proteins involved in GS regulation and developed several in vitro assays with the aim of understanding GS regulation in R. rubrum. Studies on the influence of the small metabolite effectors α-ketoglutarate and glutamine are also included together with the effect of divalent cations. In both R. rubrum and Escherichia coli, one of the enzymes participating in GS regulation is the bifunctional enzyme GlnE. GlnE is responsible for both the attachment and the removal of AMP groups from GS, which basically leads to a more inactive or active enzyme respectively. Apart from examining the above functions of GlnE, we have also found a novel third activity of R. rubrum GlnE, an antioxidant function, which is located in the C-terminal domain. We have examined this novel activity of GlnE in great detail, including site specific mutagenesis. We also generated and analyzed ΔglnE mutants in R. rubrum and the results from these studies show that suppressor mutations can occur within glnA, the gene encoding GS. We assume that the function of these suppressor mutations is to lower the specific activity of GS, which otherwise might be too high in a ΔglnE mutant since they lack the ability to adenylylate GS. In other words, it seems that ΔglnE mutants can not be generated without producing suppressor mutations.
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| 9. |
- Jonsson, Anders, 1967-, et al.
(författare)
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The state of the residential fire fatality problem in Sweden : Epidemiology, risk factors, and event typologies
- 2017
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Ingår i: Journal of Safety Research. - : Elsevier. - 0022-4375 .- 1879-1247. ; 62, s. 89-100
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Tidskriftsartikel (refereegranskat)abstract
- IntroductionResidential fires represent the largest category of fatal fires in Sweden. The purpose of this study was to describe the epidemiology of fatal residential fires in Sweden and to identify clusters of events.MethodData was collected from a database that combines information on fatal fires with data from forensic examinations and the Swedish Cause of Death-register. Mortality rates were calculated for different strata using population statistics and rescue service turnout reports. Cluster analysis was performed using multiple correspondence analysis with agglomerative hierarchical clustering.ResultsMale sex, old age, smoking, and alcohol were identified as risk factors, and the most common primary injury diagnosis was exposure to toxic gases. Compared to non-fatal fires, fatal residential fires more often originated in the bedroom, were more often caused by smoking, and were more likely to occur at night. Six clusters were identified. The first two clusters were both smoking-related, but were separated into (1) fatalities that often involved elderly people, usually female, whose clothes were ignited (17% of the sample), (2) middle-aged (45–64 years old), (often) intoxicated men, where the fire usually originated in furniture (30%). Other clusters that were identified in the analysis were related to (3) fires caused by technical fault, started in electrical installations in single houses (13%), (4) cooking appliances left on (8%), (5) events with unknown cause, room and object of origin (25%), and (6) deliberately set fires (7%).ConclusionsFatal residential fires were unevenly distributed in the Swedish population. To further reduce the incidence of fire mortality, specialized prevention efforts that focus on the different needs of each cluster are required.Practical applicationsCooperation between various societal functions, e.g. rescue services, elderly care, psychiatric clinics and other social services, with an application of both human and technological interventions, should reduce residential fire mortality in Sweden.
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