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

16 mai 2022 mis à jour par: 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.

Aperçu de l'étude

Statut

Complété

Les conditions

Intervention / Traitement

Type d'étude

Interventionnel

Inscription (Réel)

429

Phase

  • N'est pas applicable

Contacts et emplacements

Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.

Lieux d'étude

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

Critères de participation

Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.

Critère d'éligibilité

Âges éligibles pour étudier

18 ans et plus (Adulte, Adulte plus âgé)

Accepte les volontaires sains

Oui

Sexes éligibles pour l'étude

Tout

La description

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.

Plan d'étude

Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.

Comment l'étude est-elle conçue ?

Détails de conception

  • Objectif principal: Recherche sur les services de santé
  • Répartition: Randomisé
  • Modèle interventionnel: Affectation parallèle
  • Masquage: Seul

Armes et Interventions

Groupe de participants / Bras
Intervention / Traitement
Aucune intervention: Participants receive control message
Participants only receive standard heat risk warning
Expérimental: Participants receive intervention message
Participants receive standard heat risk warning plus figures incorporating the health impacts of heat and pro-environment behaviors.
Comportemental: 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.

Que mesure l'étude ?

Principaux critères de jugement

Mesure des résultats
Description de la mesure
Délai
Emotional engagement with heat and climate change risk (emotional valence)
Délai: 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)
Délai: 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
Délai: 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
Délai: 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

Mesures de résultats secondaires

Mesure des résultats
Description de la mesure
Délai
Short-term effect of self-efficacy in taking pro-environment actions
Délai: 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
Délai: 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
Délai: 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
Délai: 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

Collaborateurs et enquêteurs

C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.

Parrainer

The University of Hong Kong

Dates d'enregistrement des études

Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.

Dates principales de l'étude

Début de l'étude (Réel)

28 juillet 2020

Achèvement primaire (Réel)

30 août 2021

Achèvement de l'étude (Réel)

30 août 2021

Dates d'inscription aux études

Première soumission

28 mai 2021

Première soumission répondant aux critères de contrôle qualité

7 juin 2021

Première publication (Réel)

9 juin 2021

Mises à jour des dossiers d'étude

Dernière mise à jour publiée (Réel)

19 mai 2022

Dernière mise à jour soumise répondant aux critères de contrôle qualité

16 mai 2022

Dernière vérification

1 mai 2022

Plus d'information

Termes liés à cette étude

Autres numéros d'identification d'étude

  • UW 19-093

Plan pour les données individuelles des participants (IPD)

Prévoyez-vous de partager les données individuelles des participants (DPI) ?

INDÉCIS

Description du régime IPD

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

Informations sur les médicaments et les dispositifs, documents d'étude

Étudie un produit pharmaceutique réglementé par la FDA américaine

Non

Étudie un produit d'appareil réglementé par la FDA américaine

Non

Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .

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