Prevalence and determinants of influenza vaccination in the Hong Kong Chinese adult population
ABSTRACT The study examined the prevalence and associated factors of influenza vaccination (IV) among the general adult population in Hong Kong.
A population-based, random telephone survey interviewed 1,102 Hong Kong Chinese adults aged 18-64 years old in 2006.
Of all study participants, 95.5% had heard of IV, and only 28.1% had ever received IV. Associated factors included knowledge that IV is required annually, variables related to the Health Belief Model (HBM) (eg, perceived adverse effects, perceived efficacy), and advices given by health care professionals.
The prevalence of IV was moderately low and factors related to the HBM were found predictive of IV.
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ABSTRACT: Risk perception is a reported predictor of vaccination uptake, but which measures of risk perception best predict influenza vaccination uptake remain unclear. During the main influenza seasons (between January and March) of 2009 (Wave 1) and 2010 (Wave 2),505 Chinese students and employees from a Hong Kong university completed an online survey. Multivariate logistic regression models were conducted to assess how well different risk perceptions measures in Wave 1 predicted vaccination uptake against seasonal influenza in Wave 2. The results of the multivariate logistic regression models showed that feeling at risk (β = 0.25, p = 0.021) was the better predictor compared with probability judgment while probability judgment (β = 0.25, p = 0.029 ) was better than beliefs about risk in predicting subsequent influenza vaccination uptake. Beliefs about risk and feeling at risk seemed to predict the same aspect of subsequent vaccination uptake because their associations with vaccination uptake became insignificant when paired into the logistic regression model. Similarly, to compare the four scales for assessing probability judgment in predicting vaccination uptake, the 7-point verbal scale remained a significant and stronger predictor for vaccination uptake when paired with other three scales; the 6-point verbal scale was a significant and stronger predictor when paired with the percentage scale or the 2-point verbal scale; and the percentage scale was a significant and stronger predictor only when paired with the 2-point verbal scale. Beliefs about risk and feeling at risk are not well differentiated by Hong Kong Chinese people. Feeling at risk, an affective-cognitive dimension of risk perception predicts subsequent vaccination uptake better than do probability judgments. Among the four scales for assessing risk probability judgment, the 7-point verbal scale offered the best predictive power for subsequent vaccination uptake.PLoS ONE 07/2013; 8(7):e68019. DOI:10.1371/journal.pone.0068019 · 3.23 Impact Factor