Predicting intentions to receive a COVID-19 booster vaccination among older adults using the Theory of Planned Behavior
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Updated: Jun 7, 2025

Validation of a Psychosocial Intervention on Body Image in Older People: An Experimental Design
Published on: May 31, 2021
Yen- Yu Hsiao1, Hsiang-Ru Lai2, Tien- Shan Chu3
1School of Nursing, College of Nursing, Taipei Medical University, Taipei, Taiwan.
Abstract:
The purpose of this study was to use the Theory of Planned Behavior to predict older adults' intentions and related factors of getting COVID-19 booster vaccinations and compare gender differences. A cross-sectional study was conducted, and 147 adults aged 65 years or older were recruited by convenience sampling in Taiwan. Results revealed that 57.1 % of participants had positive intentions of getting a COVID-19 booster vaccination. Attitudes, subjective norms, and perceived behavioral control explained 86.0 % of the behavioral intentions of getting a COVID-19 booster vaccination. Perceived behavioral control was the most important factor, followed by attitudes. Differences in intentions of getting the COVID-19 booster vaccination between males and females were not significant. The Theory of Planned Behavior and its main constructs can be appropriately applied to predict intentions to receive COVID-19 booster vaccinations among older adults.
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