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

NCT04040608 | Recruiting

• 2 other identifiers: RNI 2018 DUTHEIL 32018-A03280-55
• Study Type: observational
• Target: 200
• Locations: 1 country
• Sites: 1

Brief Summary

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.

Conditions

Volunteers

Keywords

visual analog scale; stress

Outcome Measures

Primary Outcomes (2)

• Visual analog scale to assess the perceived stress

  Visual analog scale to assess the perceived stress on a horizontal, non-calibrated line of 100 mm, ranging from very low (0) to very high (100)

  day 0

• Visual analog scale to assess the perceived stress

  Visual analog scale to assess the perceived stress on a horizontal, non-calibrated line of 100 mm, ranging from very low (0) to very high (100)

  day 7

Secondary Outcomes (11)

• Visual analog scale to assess anxiety

  day 0, day 7

• Visual analog scale to assess sleep quality

  day 0, day 7

• Visual analog scale to assess fatigue

  day 0, day 7

• Job Demand-Control-Support (JDSC) questionnaire of Karasek

  day 0, day 7

• The Effort-Reward Imbalance Questionnaire (ERI)

  day 0, day 7

Study Arms (1)

experimental group

differences in responses to visual analog scales depending on screen sizes

Other: Influence of screen sizes on responses to visual analog scales of stress

Interventions

Influence of screen sizes on responses to visual analog scales of stress OTHER

An open questionnaire will be created by the Clinical Research Direction. The questionnaire will be opened by the examinator who will fulfill the anonymized identification of participants and the type of screens. In a dedicated room at the LaPSCo, the participants will answer the same VAS on four different sizes/types of screens (24-inch screen, laptop, tablet, smartphone) and on paper. Saliva will be collected after answering questionnaires. Heart rate variability and skin conductance will be measured with the use of a wrist watch during 15 minutes, from the entrance in the room to the completion of questionnaires. The participant will undergo the same examination within a week (15 minutes).

experimental group

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

healhy volunteers

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…)

Sponsors & Collaborators

• University Hospital, Clermont-Ferrand: lead
• Institut de Médecine du Travail: collaborator
• UMR CNRS 6024, LaPSCo: collaborator

Study Sites (1)

Chu Clermont Ferrand

Clermont-Ferrand, 63003, France

RECRUITING

Study Officials

• frédéric Dutheil

  University Hospital, Clermont-Ferrand

  PRINCIPAL INVESTIGATOR

Central Study Contacts

Lise Laclautre

CONTACT

334.73.754.963; promo_interne_drci@chu-clermontferrand.fr

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: CROSS SECTIONAL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: July 26, 2019
• First Posted: July 31, 2019
• Study Start: March 2, 2021
• Primary Completion (Estimated): March 1, 2028
• Study Completion (Estimated): March 1, 2028
• Last Updated: February 12, 2026

Record last verified: 2026-02

Data Sharing

• IPD Sharing: Will not share

Locations

FR (1)