Screen time, sleep and mood (pilot)

About

A four-week diary study on evening screen use and sleep quality.

All criteria must match

Age >= 18Age <= 35

Members of your own study are named here, and each time this page is opened the access is logged.

Participant	Status	Source	Enrolled	Completed	Coupon	Actions
Member 0050 PT-RGXTA · Research ID	Completed	Staff	13/08/2026 18:00	20/08/2026 18:01	Pending approval	Message
Member 0044 PT-XT2BH · Research ID	Completed	Staff	13/08/2026 18:00	20/08/2026 18:00	Assigned	Message

2 enrolments

2 / 30 enrolled · 7%

Platform: Qualtrics
Link: /dev/survey/Not opened as a link - a survey address must start with http:// or https://. Fix it on the Edit form.

Each participant gets this link with their own enrolment token, so completions are matched back without collecting contact details.

Three things to configure once, in the Qualtrics survey and its export.

Embedded data: ipay Add a field with this name at the top of the survey flow. iPAY appends the member's own enrolment token to their survey link, and that token is what matches the response back. Never include the field in a report or an export you share.
End of survey: /app/studies/<enrollment_id>/returned/ Prefixed with the address participants reach iPAY on. This instance is configured with a local one, which a Qualtrics redirect could never send anybody to - set SITE_URL before the survey goes out. Redirect finishers here. The page marks the enrolment as submitted; the coupon is released only after iPAY has verified the response with Qualtrics, so a member who lands on it has not been paid by doing so.
Export: UTC Set the CSV export's time zone to UTC. The export carries no offset, so iPAY reads its timestamps as UTC; a Hong Kong export would date every completion eight hours early.

Team members see the same enrolments as the owner. Adding co-investigators arrives with the backend.