When to be vaccinated? What to consider? Modelling decision-making and time preference for COVID-19 vaccine through a conjoint experiment

Pak Hong Ricci Yue, Hi Po Bobo Lau, Siu Man Ng, Lai Wan Cecilia Chan, Samson Yuen*

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

Abstract

How do citizens choose COVID-19 vaccines, and when do they wish to be vaccinated? A choice-based conjoint experiment was conducted in Hong Kong to examine factors that shape citizens’ preference toward COVID-19 vaccines and their time preference to be vaccinated, which is overlooked in extant literature. Results suggest people are most concerned about vaccines’ efficacy and severe side-effects, and that cash incentives are not useful in enhancing vaccine appeal. The majority of respondents show low intention for immediate vaccination, and many of them want to delay their vaccination. Further analysis shows that their time preference is shaped more by respondent characteristics than vaccine attributes. In particular, confidence in the vaccine, trust in government, and working in high-risk professions are associated with earlier timing for vaccine uptake. Meanwhile, forced COVID testing would delay vaccination. The findings offer a novel view in understanding how people decide whether and when to receive new vaccines, which have pivotal implications for a head start of any mass vaccination programs.

Original languageEnglish
Pages (from-to)6300-6308
Number of pages9
JournalVaccine
Volume41
Issue number42
Early online date9 Sept 2023
DOIs
Publication statusPublished - 6 Oct 2023

Scopus Subject Areas

  • Molecular Medicine
  • Immunology and Microbiology(all)
  • veterinary(all)
  • Public Health, Environmental and Occupational Health
  • Infectious Diseases

User-Defined Keywords

  • Conjoint analysis
  • COVID-19
  • Survey experiment
  • Time preference
  • Vaccination intention
  • Vaccine hesitancy

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