Predicting Influenza Vaccination Intent Among At-Risk Chinese Older Adults in Hong Kong

Background: Older adults with major chronic illnesses are very susceptible to influenza and its serious complications, but many do not obtain vaccinations. Little is known about factors associated with intention to obtain influenza vaccination among at-risk Chinese older adults in Hong Kong. Objectives: The aim of this study was to identify factors associated with intent to obtain influenza vaccination among at-risk Chinese older adults in Hong Kong. Methods: This multicenter descriptive correlational study recruited a convenience sample of 306 Chinese older adults with medical risk factors for influenza and its serious complications from the general outpatient clinics in Hong Kong. Interviews were conducted to assess intent to obtain influenza vaccination for the coming year, health beliefs about influenza, and discomfort following past vaccinations. Results: The current influenza vaccination rate was 58.5%; only 36.3% intended to get vaccinated the following year. After controlling for clinical and demographic factors in a logistic regression model, perceived susceptibility predicted intention to obtain future vaccination (OR = 1.42, 95% CI [1.14, 1.78]), whereas postvaccination discomfort was negatively associated with intention (OR = 0.063, 95% CI [0.006, 0.63]). Conclusions: Intention to obtain influenza vaccination was low among at-risk Chinese older adults. Strengthening health beliefs and creating strategies to provide positive influenza vaccination experiences are possible approaches to interventions to improve uptake of influenza vaccination rates.