Public health · 2025
Health impacts of cold exposure among people experiencing homelessness: A narrative systematic review on risks and risk-reduction approaches.
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Akhanemhe Rebecca, Petrokofsky Carl, Ismail Sharif A
Аннотация
OBJECTIVE: To systematically review evidence from high income countries on health risks from cold weather exposure among people experiencing homelessness (PEH) and assess evidence on risk-reduction interventions and their effectiveness.
STUDY DESIGN: Narrative systematic review.
METHODS: Keyword-structured searches were performed in CINAHL, Emcare, Medline, SocINDEX, Scopus, OpenGrey, Social Policy and Practice and Web of Science, and supplemented by grey literature searches in a selection of other databases, from 1973 to 2024. Articles were double-screened on title/abstract and full text. Extracted data included information on study setting and population, health risks from cold exposure, intervention characteristics and effect sizes where reported. Studies were critically appraised using Joanna Briggs Institute checklists.
RESULTS: 24 studies were included, predominantly from the UK and US. People sleeping rough were found to be at greater risk than the general population of mortality due to hypothermia, and of hypothermic injury. Studies assessing health service utilisation indicated higher than population average admission rates due to cold exposure among PEH. Studies on interventions to reduce health risks from cold exposure in these populations all addressed multi-component programmes including shelter provision as a central component. Evidence of effectiveness was very limited.
CONCLUSION: PEH are at greater risk of death from hypothermia, and of hypothermic injury due to cold exposure than the general population. The use of overnight shelters and severe weather emergency plans are established approaches in high income settings for reducing risks from cold exposure among those sleeping rough, but further evidence on effectiveness is needed.
STUDY DESIGN: Narrative systematic review.
METHODS: Keyword-structured searches were performed in CINAHL, Emcare, Medline, SocINDEX, Scopus, OpenGrey, Social Policy and Practice and Web of Science, and supplemented by grey literature searches in a selection of other databases, from 1973 to 2024. Articles were double-screened on title/abstract and full text. Extracted data included information on study setting and population, health risks from cold exposure, intervention characteristics and effect sizes where reported. Studies were critically appraised using Joanna Briggs Institute checklists.
RESULTS: 24 studies were included, predominantly from the UK and US. People sleeping rough were found to be at greater risk than the general population of mortality due to hypothermia, and of hypothermic injury. Studies assessing health service utilisation indicated higher than population average admission rates due to cold exposure among PEH. Studies on interventions to reduce health risks from cold exposure in these populations all addressed multi-component programmes including shelter provision as a central component. Evidence of effectiveness was very limited.
CONCLUSION: PEH are at greater risk of death from hypothermia, and of hypothermic injury due to cold exposure than the general population. The use of overnight shelters and severe weather emergency plans are established approaches in high income settings for reducing risks from cold exposure among those sleeping rough, but further evidence on effectiveness is needed.