Number of visit days:

The number of times physical attendance is required when participating in the research project. The total number of visits may depend on other factors, so the figure may be given as a range.

From registration to completed participation:

The expected time frame from start to finish when participating in the project. That is, how long it will be from when you join the project until your participation is complete. The time may depend on other factors, so a range may be given.

Total expected amount of time:

The total amount of time you will need to spend participating in this project. All visits, home tasks, tests, and more are included.