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Perceptions of Weather Risks and Climate Beliefs Among the Hong Kong General Public

16. maj 2022 opdateret af: Qiuyan Liao, The University of Hong Kong

Climate Change Beliefs, Perceived Risk of Heat Stress and Responses to Heat Health Warnings Among the General Public of Hong Kong: a Mixed-methods Study

Background: Local abnormal heat events may be used as proxies for communicating the health impacts of climate change when people physically feel the effects to reduce the psychological distance of climate change and improve public engagement with climate and weather risk. However, there are concerns that this strategy may be more effective for climate believers, and that it may somewhat compromise the scientific precision because it may lead to erroneous beliefs that climate change is merely characterized by temperature rises or extreme heat but ignore other extreme weather events such as flood and extreme cold, and that cold spells are interpreted as evidence of no climate change. None of these potential effects and concerns has been tested.

Aims: This proposed study is aimed to explore patterns of climate beliefs and their influences on perceptions of heat-related risks and responses to heat health warnings in the general public of Hong Kong; (2) Test the preliminary effects of a revised heat health warning (RHHW) that incorporates information about the health impacts of climate change into existing heat health warning on perceived heat-related risk and climate beliefs.

Design and subjects: This will be a mix-methods study comprising in-depth qualitative interviews, a population-based cohort survey and a pilot randomized control trial (RCT). Subjects will be the general Hong Kong Chinese adults aged ≥18 years.

Main outcome measures: Latent class analysis will be conducted to examine patterns of climate beliefs while structural equation modelling to test the relationships among climate beliefs, perceived heat-related risks and behavioural responses to heat warnings. Qualitative data will be analysed using thematic content analysis while the effect of RHHW will be tested using t-test and linear regression models.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

429

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

  • Hong Kong
      • Hong Kong, Hong Kong
        • University of Hong Kong School of Public Health

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ja

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • Participants should own a mobile phone and be able to read Chinese.

Exclusion Criteria:

  • Participants with no mobile phone or cannot understand Chinese will be excluded.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Sundhedstjenesteforskning
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Enkelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Ingen indgriben: Participants receive control message
Participants only receive standard heat risk warning
Eksperimentel: Participants receive intervention message
Participants receive standard heat risk warning plus figures incorporating the health impacts of heat and pro-environment behaviors.
Adfærdsmæssigt: Heat risk and pro-environment behavior message
Eligible participants will be randomized to either a control condition to receive a standardized heat health warning or an intervention condition to receive a heat health warning plus figures depicting heat risk and pro-environment behavior via their preferred and accessible channel (WhatsApp, WeChat or the text message) each time when a Very Hot Weather Warning is issued by the Hong Kong Observatory.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Emotional engagement with heat and climate change risk (emotional valence)
Tidsramme: One week after completion of all messages delivery
Measure participants' emotional engagement with risk of heat stress and climate change, in specific, participants will be asked to indicate how they feel about the health impacts of climate change (using a slider from -3 to 3). Higher scores indicate more positive emotion.
One week after completion of all messages delivery
Emotional engagement with heat and climate change risk (discrete emotion)
Tidsramme: One week after completion of all messages delivery
Participants will be asked how much they feel fear/helpless/worried/disgust when thinking about health impacts of climate change (on a 7-point Likert scale). Higher scores indicate stronger emotion arousal.
One week after completion of all messages delivery
Short-term effect of risk perception toward heat and climate change risk
Tidsramme: One week after completion of all messages delivery
Their perceived health risk toward climate change and heat stress will be measured using items derived from our baseline and follow-up surveys (likelihood, severity and perceived worry will be used to gauge participants' risk perception). All measures on a 5-point likert scale with higher scores indicating greater risk perception.
One week after completion of all messages delivery
Long-term effect of risk perception toward heat and climate change
Tidsramme: One month after completion of all messages delivery
Their perceived health risk toward climate change and heat stress will be measured using items derived from our baseline and follow-up surveys (likelihood, severity and perceived worry will be used to gauge participants' risk perception). All measures on a 5-point likert scale with higher scores indicating greater risk perception.
One month after completion of all messages delivery

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Short-term effect of self-efficacy in taking pro-environment actions
Tidsramme: One week after completion of all messages delivery
Perceived self-efficacy in taking actions to mitigate climate change will be measured by four items derived from previous baseline and follow-up surveys.(Items include: 1) I can personally help to reduce climate change by changing my behavior 2) There are a variety of external factors that make it difficult for me to take actions that help to reduce climate change 3) My action to reduce the effects of climate change in my community will encourage others to reduce the effect of climate change through their own actions 4) If I want, it is easy for me to take actions to help tackle climate change). Responses will be rated on a 5-point Likert (Strongly disagree/Disagree/Agree/Strongly agree/No opinion).
One week after completion of all messages delivery
Long-term effect of self-efficacy in taking pro-environment actions
Tidsramme: One month after completion of all messages delivery
Perceived self-efficacy in taking actions to mitigate climate change will be measured by four items derived from previous baseline and follow-up surveys.(Items include: 1) I can personally help to reduce climate change by changing my behavior 2) There are a variety of external factors that make it difficult for me to take actions that help to reduce climate change 3) My action to reduce the effects of climate change in my community will encourage others to reduce the effect of climate change through their own actions 4) If I want, it is easy for me to take actions to help tackle climate change). Responses will be rated on a 5-point Likert (Strongly disagree/Disagree/Agree/Strongly agree/No opinion).
One month after completion of all messages delivery
Short-term effect of intention in taking pro-environment actions
Tidsramme: One week after completion of all messages delivery
Participants will also be asked to indicate their intention to 1) reduce energy waste 2) buy energy efficient products, and 3) change some of the daily habits to help tackle climate change. Responses will be rated on a 7-point Likert scale. Higher scores indicate greater behavioral intention.
One week after completion of all messages delivery
Long-term effect of intention in taking pro-environment actions
Tidsramme: One month after completion of all messages delivery
Participants will also be asked to indicate their intention to 1) reduce energy waste 2) buy energy efficient products, and 3) change some of the daily habits to help tackle climate change. Responses will be rated on a 7-point Likert scale. Higher scores indicate greater behavioral intention.
One month after completion of all messages delivery

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

The University of Hong Kong

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

28. juli 2020

Primær færdiggørelse (Faktiske)

30. august 2021

Studieafslutning (Faktiske)

30. august 2021

Datoer for studieregistrering

Først indsendt

28. maj 2021

Først indsendt, der opfyldte QC-kriterier

7. juni 2021

Først opslået (Faktiske)

9. juni 2021

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

19. maj 2022

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

16. maj 2022

Sidst verificeret

1. maj 2022

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • UW 19-093

Plan for individuelle deltagerdata (IPD)

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UBESLUTET

IPD-planbeskrivelse

Derived data supporting the findings of this study are available from the corresponding author on reasonable request.

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Kliniske forsøg med Weather Risk Perception

Kliniske forsøg med Heat risk and pro-environment behavior message

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