Influence of Screen Sizes on Responses to Visual Analog Scales of Stress

Recruiting now

Conditions studied: Volunteers

In brief

Visual analog scales (VAS) are one of the most common tools used in questionnaires. VAS are validated for pain and stress for example on a horizontal, non-calibrated line of 100 mm, ranging from very low (0) to very high (100). Nowadays, most VAS are used on questionnaires on internet. However, the influence of screen sizes on responses to visual analog scales were never studied.

Key facts

Study ID

NCT04040608

Run by

University Hospital, Clermont-Ferrand

People needed

200

Starts

2021-03-02

Expected to finish

2028-03-01

Last updated by the study team

2026-02-12

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• Adult persons

You may not qualify if…

• Refusal to participate in the study
• Unable to answer basic questions (difficulties understanding, cognitive disorders…)

Where it is running

• Chu Clermont Ferrand — Clermont-Ferrand, France (enrolling)

Full record on ClinicalTrials.gov

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