| Adoption | Motivation | Patients’ motivations were low, with a very short, impersonal invitation from an organisation they ‘followed’. | Patients’ motivations were high, with a personal invitation from their trusted healthcare professional. |
| Ability | Patients’ abilities were presumed to be high as users of social media all that was required was to ‘click a link’ In a Tweet or Facebook message. | Patients’ abilities were relatively low, as an immediate response was not possible. Potential users had to locate the download information when they next had access to a suitable device. |
| Trigger | The posts in the Facebook and Twitter (triggers) reached 400,000 followers, 300 clicked to the webpage, 87 downloaded and registered to use the app. | The invitation letters and nurse invitations were sent/given directly to 608 patients, of whom 24 downloaded and registered to use the app. |
| Adherence | Motivation | Patients’ motivations were low, with no encouragement from their practice and no further social media communication. | Patients’ motivations were relatively high, both because of the interest of their healthcare professional but also the group providing interviews were personally involved in talking with a researcher. |
| Ability | Patients’ abilities were good as most reported few problems with using the app. | Patients’ abilities were good as most reported few problems with using the app. |
| Trigger | Trigger in the form of notifications and reminders were available on the app. | Triggers in the form of notifications and reminders were available on the app. |