Characteristics
Domains assessed:
Prose: Comprehension, Information seeking: Document
Specific context:
Vaccination, Infectious Disease, Health Promotion
Validation sample population age:
Older Adults: 65+ years, Adults: 18 to 64 years
Modes of administration in validation study:
Computer-based
Psychometrics
Number of items:
12
Sample size in validation study:
885
Administration Time (minutes):
5 minutes
Language of validated version:
English
Main article reference
Biasio, L. R., Bonaccorsi, G., Lorini, C., & Pecorelli, S. (2021). Assessing COVID-19 vaccine literacy: a preliminary online survey. Human vaccines & immunotherapeutics, 17(5), 1304–1312. https://doi.org/10.1080/21645515.2020.1829315
Corresponding author
LR Biasio
Description
Covid-19 Vaccine Literacy Scale (VLS) has been developed to assess vaccine literacy in adults about Covid-19 vaccination. The scale was derived from the tool HLVa-IT (Health Literacy about Vaccination of adults in ITalian - HLVa-IT)
Year Measure first Published: 2020
About This Measure
Scoring categories:
HLVa-IT Cocid-19-VLS is composed of 12 items (questions) divided into two scales, functional (items 1 to 4) and interactive-critical (items 5 to 12).
From the psychometric point of view, functional VL questions are more about language capabilities, involving the semantic system, while the interactive-critical questions regard more the cognitive efforts, such as problem solving and decision making.
The answers are supplied by the interviewee according to a four-point Likert scale
About the Validation of this Measure
Country where validated:
Italy
Content validity:
The tool was developed based on HLVa-IT (Health Literacy about Vaccination of adults in ITalian)
Some questions were adapted to the vaccination domain and cultural characteristics of the Italian population.
Reliability (Cronbach Alpha):
0.85
Reliability notes:
Answers to functional and interactive-critical questions showed good/acceptable internal consistency (Cronbach’s alpha = 0.8500 and 0.7672, respectively)
