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Does greater exposure to own-health data make a difference on the visual analog scale?
Amir Shmueli1, David Messika, Havi Murad
1Department of Health Management, The Hebrew University, P.O.B. 12272, Jerusalem, 91120, Israel. ashmueli@md.huji.ac.il
Summary
The Visual Analog Scale (VAS) is a reliable tool for assessing health-related quality of life. Repeated VAS measurements show stability, indicating it effectively uses personal health data for accurate evaluations.
Area of Science:
- Health Economics
- Psychometrics
- Quality of Life Research
Background:
- The Visual Analog Scale (VAS) is widely used to measure health-related quality of life (HRQoL).
- Understanding the stability and data recall influencing VAS evaluations is crucial for its application.
Purpose of the Study:
- To investigate how exposure to personal health data influences Visual Analog Scale (VAS) evaluations of HRQoL.
- To assess the stability of VAS measurements over time with varying recall periods.
Main Methods:
- A survey of 2,500 individuals was conducted.
- Three VAS measurements were administered at different time points, with increasing exposure to personal health data.
- Statistical analyses included intraclass correlation coefficient (ICC) and paired t-tests to assess measurement agreement and differences.
Main Results:
- The VAS demonstrated high stability, with an intraclass correlation coefficient (ICC) of 0.881.
- Paired t-tests revealed insignificant differences between the three VAS measurements.
- Over 50% of participants reported identical VAS scores across all three measurements.
Conclusions:
- The Visual Analog Scale (VAS) is a stable and reliable measure for evaluating health-related quality of life.
- VAS use appears to inherently access necessary personal health data for accurate self-reported evaluations.
- The findings support the validity of VAS in diverse health research and clinical settings.
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