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Ordinal Level of Measurement00:55

Ordinal Level of Measurement

The way a set of data is measured is called its level of measurement. Correct statistical procedures depend on a researcher being familiar with levels of measurement. For analysis, data are classified into four levels of measurement—nominal, ordinal, interval, and ratio.
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Nominal Level of Measurement00:56

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The way a set of data is measured is called its level of measurement. Correct statistical procedures depend on a researcher being familiar with levels of measurement. Not every statistical operation can be used with every set of data. For analysis, data are classified into four levels of measurement—nominal, ordinal, interval, and ratio.
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Measuring people's knowledge about vaccination: developing a one-dimensional scale.

Alexandra Zingg1, Michael Siegrist

  • 1ETH Zurich, Institute for Environmental Decisions (IED), Consumer Behavior, Universitaetstrasse 22, CHN J75.1, 8092 Zurich, Switzerland. alexandrazingg@ethz.ch

Vaccine
|March 27, 2012
PubMed
Summary
This summary is machine-generated.

This study introduces a new scale to measure vaccination knowledge, finding significant differences in understanding and a strong link between knowledge and willingness to vaccinate. This tool aids in tracking knowledge changes.

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Area of Science:

  • Health Communication
  • Psychometrics
  • Public Health

Background:

  • Misinformation regarding vaccinations is easily spread via new media.
  • Accurate measurement of vaccination knowledge is crucial for understanding public health attitudes.
  • Existing scales may not adequately capture general vaccination knowledge.

Purpose of the Study:

  • To develop and validate a new scale measuring general knowledge about vaccinations.
  • To examine the psychometric properties of the proposed scale.
  • To investigate the relationship between vaccination knowledge and willingness to vaccinate.

Main Methods:

  • Two studies were conducted with a total of 1356 participants from Switzerland (N=1123) and an online panel (N=233).
  • Mokken scale analysis and test-retest reliability analyses were used to evaluate the scale.
  • Survey methodology including mail and online questionnaires was employed.

Main Results:

  • A nine-item scale demonstrated good psychometric properties, forming a one-dimensional structure.
  • Significant individual differences in vaccination knowledge were observed across both study samples.
  • A substantial positive correlation was found between vaccination knowledge and willingness to vaccinate.

Conclusions:

  • The newly developed scale is a reliable and valid instrument for assessing general vaccination knowledge.
  • The findings highlight the importance of accurate vaccination knowledge for public health initiatives.
  • The scale can be utilized in research to examine group differences and measure knowledge changes over time.