Table 5.
Difficulties associated with activities of the second in-person visit and their correction measures.
| Study activity and associated difficulties or risks | Measures to correct or mitigate | ||
| Visit |  | ||
|  | Forget to visit | Send reminder call before visit | |
| Satisfaction and usability evaluation |  | ||
|  | Validity of questionnaires | Select valid instruments | |
| Bias | Aside from the general questions, include questions according to the number of uses of the bracelet and app | ||
| Delivery and retrieval of wearables |  | ||
|  | No return of the device | Stress the necessity of returning the device Communicate that the patient must pay the cost of the device | |
| Return in bad condition | Instructions of use Damage will be assessed and, based on impact, the device will be paid for if it is in bad condition | ||