Influence of Screen Sizes on Responses to Visual Analog Scales of Stress
ConditionVolunteers
Trial statusRecruiting
Trial phaseNot listed
Trial typeObservational
Biological sexAll
Age18+
SponsorUniversity Hospital, Clermont-Ferrand
About this trial
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.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
Adult persons
Disqualifiers
Refusal to participate in the study
Unable to answer basic questions (difficulties understanding, cognitive disorders…)
Trial population
healhy volunteers
Trial design
Design model
Cohort
Time perspective
Cross-sectional
Treatments tested in this trial
Influence of screen sizes on responses to visual analog scales of stress
Other interventionAn 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).
Treatment groups
200 Participants
are divided into 1 treatment groupGroup A: experimental group1 intervention
Trial outcomes
Primary outcomes
1
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)
Time frame
day 02
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)
Time frame
day 7Secondary outcomes
1
Visual analog scale to assess anxiety
Visual analog scale to assess anxiety on a horizontal, non-calibrated line of 100 mm, ranging from very low (0) to very high (100)
Time frame
day 0, day 72
Visual analog scale to assess sleep quality
Visual analog scale to assess sleep quality on a horizontal, non-calibrated line of 100 mm, ranging from very low (0) to very high (100)
Time frame
day 0, day 73
Visual analog scale to assess fatigue
Visual analog scale to assess fatigue on a horizontal, non-calibrated line of 100 mm, ranging from very low (0) to very high (100)
Time frame
day 0, day 74
Job Demand-Control-Support (JDSC) questionnaire of Karasek
The Job Demand-Control-Support (JDSC) questionnaire of Karasek assessed job demands, job control and social support through 26 items.
Time frame
day 0, day 7Sponsors and contacts
Click on the lead sponsor to view all of their trials.
University Hospital, Clermont-Ferrand
Lead sponsor
Institut de Médecine du Travail
Collaborator
UMR CNRS 6024, LaPSCo
Collaborator
Source ClinicalTrials.gov