| EE1 | The use of the SleepCare app gives me no ambiguities |
| EE2 | The SleepCare app is easy to use |
| EE3 | Learning to work with the SleepCare app is easy for me |
| EE4 | Utilizing the app gives me little trouble |
| EE5-R | Using the SleepCare app is too complicated so I find it hard to understand |
| EE6 | The app fits in with my daily life |
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