Usability Study of a Wireless Monitoring System among Alzheimer’s Disease Elderly Population

Table 2

Behavior of the subjects towards new monitoring systems.

System 1	Subject 1	Subject 2	Subject 3	Subject 4
Day 1	WTU: low	WTU: n/a	WTU: n/a	WTU: high
	ETL: high	ETL: low	ETL: high	ETL: high
	TTA: n/a	TTA: short	TTA: short	TTA: short
	WTK: low	WTK: high	WTK: medium	WTK: high
	NOE: low	NOE: many	NOE: none	NOE: none
	LOS: low	LOS: high	LOS: indifferent	LOS: indifferent
	IWA: none	IWA: none	IWA: none	IWA: none
	Did not want to wear it.; After 30 minutes the subject forgot about it and was happy to remove it at the end of day.	No resistance. Then the patient removed it and played with it.; At the end, he did not want to give it back.	No resistance.	No resistance. The patient was already using a pouch around the waist.
Day 2	WTU: medium	WTU: high	LOS: none	WTK: medium
	WTK: medium	NOE: few
	NOE: low		Totally indifferent.	Indifferent.
	LOS: indifferent	Happy to wear it.
	Light resistance to wear it initially.
Day 3	WTU: high	NOE: none
	TTA: long	LOS: indifferent
	WTK: high
	NOE: none	Indifferent.
	Happy to wear it. The family members convinced the subject to wear it saying it was meant for stomach pain relief.
System 2	Subject 1	Subject 2	Subject 3
Night 1	WTU: high	WTU: medium	WTU: low
	ETL: low	ETL: low	ETL: high
	TTA: n/a	TTA: n/a	TTA: short
	WTK: low	WTK: low	WTK: medium
	NOE: few	NOE: high	NOE: none
	LOS: low	LOS: low	LOS: low
	IWA: high	IWA: none	IWA: low
	No resistance at the beginning (the patient loves hats). The patient removed it after some time.	The patient kept for some minutes then removed it. After three times the patient did not want to wear it anymore.	No resistance but the patient did not like it.
Night 2	NOE: many	WTU: low	WTU: medium
	IWA: low	WTK: low	WTK: medium
		NOE: high	LOS: medium
	The subject wore it but moved it many times.
		Removed it many times during night.	No resistance.
Night 3	ETL: medium	TTA: average
	TTA: average	WTK: medium
	WTK: medium	NOE: none
	NOE: none	LOS: indifferent
	LOS: indifferent
	The subject was willing to wear it and did not move at all during night.	The subject was monitored from bedside all night to make sure she wore it.