Table 3.

Overview of the attrition-related factors from the participants

Question	Scale
‘MyPlan 2.0’ lived up to my expectations	1 (not at all) – 5 (very much)
The website of ‘MyPlan 2.0’ is user friendly	1–5
The mobile application of ‘MyPlan 2.0’ is user friendly	1–5
My GP reacted positively regarding my participation in ‘MyPlan 2.0’	1–5
My friends and family reacted positively about my participation in ‘MyPlan 2.0’	1–5
‘MyPlan 2.0’ helped me to be more physically active/to sit less	1–5
The personal contact with the researchers of ‘MyPlan 2.0’ was an additional reason for me to participate	1–5
Going through ‘MyPlan 2.0’ took a lot of my time	1–5
Filling out the questionnaires took a lot of my time	1–5
aI also took part in other programmes targeting my healthy lifestyle (e g. consulting a dietitian, starting to run, …) aWhich ones?	Yes/No
While taking part in the study drastic changes in my life occurred (e.g. death of a family member, had a (grand)child, new job, etc.)	1–5
I can work well with a computer	1–5
When I have computer problems, I can rely on others to help me	1–5
I had doubts about participating in this study	1–5

^aThis question is also measured at the follow-up measurement