Table 4.
Construct validity indicators.
| MARSa objective subscale items | Corrected item-total correlations (Pearson r) | Success rate | ||||
|
|
|
Convergent validity | Divergent validity | |||
| Engagement | 5/5 | 5/5 | ||||
|
|
Entertainment | 0.72 |
|
|
||
|
|
Interest | 0.70 |
|
|
||
|
|
Customization | 0.64 |
|
|
||
|
|
Interactivity | 0.74 |
|
|
||
|
|
Target group | 0.83 |
|
|
||
| Functionality | 3/4 | 3/4 | ||||
|
|
Performance | 0.65 |
|
|
||
|
|
Ease of use | 0.27 |
|
|
||
|
|
Navigation | 0.50 |
|
|
||
|
|
Gestural design | 0.38 |
|
|
||
| Aesthetics |
|
3/3 | 3/3 | |||
|
|
Layout | 0.70 |
|
|
||
|
|
Graphics | 0.79 |
|
|
||
|
|
Visual appeal | 0.81 |
|
|
||
| Information | 6/6 | 5/6 | ||||
|
|
Accuracy of app description | 0.43 |
|
|
||
|
|
Goals | 0.67 |
|
|
||
|
|
Quality of information | 0.57 |
|
|
||
|
|
Quantity of information | 0.68 |
|
|
||
|
|
Visual information | 0.51 |
|
|
||
|
|
Credibility | 0.47 |
|
|
||
|
|
Evidence base | N/Ab | N/A | N/A | ||
aMARS: Mobile Application Rating Scale.
bN/A: not applicable.