Table 5.
Levels of agreement with statements related to trust in the NHS COVID-19 app.
| Statementsa | Participants who have the app (n=490) | Participants who do not intend to download the app (n=264) | P valueb | ||
| Mean (SD) | Median (IQR) | Mean (SD) | Median (IQR) |
|
|
| I trust that the data collected by the app are used responsibly | 3.98 (0.888) | 4 (1) | 2.63 (1.224) | 3 (2) | <.001 |
| I trust that the data collected by the app are stored securely | 3.93 (0.916) | 4 (2) | 2.56 (1.149) | 3 (1) | <.001 |
| I feel that the app is reliable | 3.89 (0.919) | 4 (2) | 2.42 (1.062) | 2 (1) | <.001 |
| I trust that the app will do what it is supposed to do | 3.97 (0.880) | 4 (1) | 2.53 (1.136) | 3 (1) | <.001 |
| I think the NHS COVID-19 app is basically trustworthy | 4.03 (0.875) | 4 (1) | 2.73 (1.129) | 3 (1) | <.001 |
| I think that most other people will download the app | 3.58 (1.026) | 4 (1) | 2.65 (1.086) | 3 (1) | <.001 |
| I trust that most other people will self-isolate if told to do so by the app | 3.54 (1.113) | 4 (1) | 2.80 (1.106) | 3 (2) | <.001 |
| I trust that my data will be deleted when the app says they will be | 3.93 (0.892) | 4 (2) | 2.48 (1.196) | 2 (2) | <.001 |
| It is important to me that I trust the app in order to use it | 4.15 (0.736) | 4 (1) | 3.86 (1.145) | 4 (2) | <.001 |
aStatements were rated on a scale from 1 (“strongly disagree”) to 5 (“strongly agree”).
bIndependent-samples Kruskal-Wallis tests were carried out with a significance level of P<.05 and post hoc tests to indicate which groups had significant differences between them, with Bonferroni correction to account for multiple tests. Additional differences, including participants who deleted or intended to download the app, are in Table S3 in Multimedia Appendix 1.