Table 2

Thematic analysis results: themes relating to usage and effects on behavior
Theme 1: Automaticity Theme 2: Mobile Phone accessibility Theme 3: Social Contexts
EXTRACT 1 EXTRACT 4 EXTRACT 7
Pps 11: If you’re having a really busy day then you know it could slip out of your mind. Pps 2: The times when it was tedious was when I didn’t have my phone on me for some reason. Pps 2: If I was with people they would just say why are you taking a picture of your dinner and I’d just explain to them and that was fine.
EXTRACT 2 EXTRACT 5 EXTRACT 8

R: Is there anything you think could be done to improve the app?

Pps 1: How you can use the app to force, not force habit, but enhance it as a habit.

Pps 5: Weekends tend to be a bit of a pain, the phone is in one room, you’re in another, or up the garden somewhere. Pps 11: When you’re at work where you don’t want to be seen to be fiddling with your phone all the time, because obviously you’re there to work, so that’s one negative I suppose, but then that’s just a personal thing.
EXTRACT 3 EXTRACT 6 EXTRACT 9
R: So would you be motivated to continue using it then? Pps 10: Because it’s on the phone, you know I have my phone with me all the time anyway, so it’s very convenient. Pps 4: I didn’t get any strange looks when I was in Starbucks.
Pps 10: Yeah, I would still try and it’s about changing habits I think.
Theme 4: Raised awareness Theme 5: Changing other behaviors
EXTRACT 10 EXTRACT 13
Pps 4: I found it very useful, it made me much more aware of what I was eating and it’s actually made me modify what I’m eating as well. Pps 1: I’m thinking about doing it before using the app, so I’m having this therefore I’m going to be recording it, therefore do I need the biscuit?
EXTRACT 11 EXTRACT 14
Pps 3: There have been occasions at work where I’ve thought I fancy something to eat and I would have a look at what I’d eaten, then I think ‘you’ve had enough, you can wait till lunch’. Pps 6: The stuff that I read on it, you know the ideas about not eating in front of the TV and all that stuff, that stuff makes sense and you know I’ve changed how I do that.
EXTRACT 12
Pps 12: But even now it has made me think more about food more, so I do think I’ve already eaten that and eaten that today.

Robinson et al.

Robinson et al. BMC Public Health 2013 13:639   doi:10.1186/1471-2458-13-639

Open Data