Clinical trial NCT04040608: Influence of Screen Sizes on Responses to Visual Analog Scales of Stress
Official title: Influence of Screen Sizes on Responses to Visual Analog Scales of Stress
Study type: OBSERVATIONAL
Overall status: RECRUITING
Conditions: Volunteers
Keywords: visual analog scale
stress
Lead sponsor: University Hospital, Clermont-Ferrand
Sponsor class: OTHER
Collaborators: name: Institut de Médecine du Travail
name: UMR CNRS 6024, LaPSCo
First posted: 2019-07-31
Enrollment: 200
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Observational model: COHORT
Time perspective: CROSS_SECTIONAL
Sampling method: NON_PROBABILITY_SAMPLE
Study population: healhy volunteers

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.

Detailed description: 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.

Primary objective is to study the influence of screen sizes on response responses to visual analog scales.

Secondary objectives are to assess:

* the variability of responses depending on screen sizes within a week
* the influence of perception of work and addiction to work on the variability depending on screen sizes
* relationships with biomarkers of stress : salivary DHEAS, heart rate variability and skin conductance

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).

Eligibility criteria: Inclusion Criteria:

* Adult persons

Exclusion Criteria:

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

Primary outcomes:
measure: Visual analog scale to assess the perceived stress
timeFrame: day 0
measure: Visual analog scale to assess the perceived stress
timeFrame: day 7
Secondary outcomes:
measure: Visual analog scale to assess anxiety
timeFrame: day 0, day 7
measure: Visual analog scale to assess sleep quality
timeFrame: day 0, day 7
measure: Visual analog scale to assess fatigue
timeFrame: day 0, day 7
measure: Job Demand-Control-Support (JDSC) questionnaire of Karasek
timeFrame: day 0, day 7
measure: The Effort-Reward Imbalance Questionnaire (ERI)
timeFrame: day 0, day 7
measure: The Work Addiction Risk Test (WART)
timeFrame: day 0, day 7
measure: Hospital Anxiety and Depression (HAD) Scale
timeFrame: day 0, day 7
measure: The Maslach Burn-out Inventory (MBI)
timeFrame: day 0, day 7
measure: Heart rate variability
timeFrame: day 0, day 7
measure: : skin conductance
timeFrame: day 0, day 7
measure: Salivary DHEAS
timeFrame: day 0, day 7
Other outcomes:
Locations:
city: Clermont-Ferrand
country: France
facility: Chu Clermont Ferrand
Study officials:
affiliation: University Hospital, Clermont-Ferrand
name: frédéric Dutheil
role: PRINCIPAL_INVESTIGATOR
References: