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