Table 2.

List of variables, items, and sources of measurements

Variable name	Items	Adopted from
Perceived Usefulness (PU)	PU1—Using technology enhances my effectiveness for daily activities	Davis et al. (1989)
	PU2—Using technology makes my life more convenient
	PU3—I find technology useful for daily activities
	PU4—Using technology improves my performance in daily activities
	PU5—Using technology makes it easier to do my daily activities
Perceived ease of use (EOU)	PEOU1—I find technology easy to use	Davis et al. (1989)
	PEOU2—I am skilful at using technology
	PEOU3—I find technology flexible for daily activities
	PEOU4—My interaction with technology is clear and understandable (without confusion)
Gerontechnology self-efficacy	SE1—I could complete a task using technology if there was someone to demonstrate how	Venkatesh et al. (2003)
	SE2—I could complete a task using technology with just the instruction manual for assistance
Gerontechnology anxiety	ANX1—I feel apprehensive about using the technology	Venkatesh et al. (2003)
	ANX2—I hesitate to use the technology for fear of making mistakes I cannot correct
Cognitive ability	CA1—How satisfied are you with your ability to learn new information?	Chen and Chan (2014)
	CA2—How well are you able to concentrate?
	CA3—How satisfied are you with your ability to make decisions?
Physical function	IADL1—bility to use telephone	Chen and Chan (2014)
	IADL2—Grocery shopping
	IADL3—Food preparation
	IADL4—Doing housework or handyman work
	IADL5—Laundry
	IADL6—Getting to places beyond walking distance
	IADL7—Taking medications
	IADL8—Managing money
Self-reported health conditions	SH1—How are your general health conditions?	Chen and Chan (2014)
	SH2—How is your health condition compared with the same age groups?
	SH3—How good is your hearing?
	SH4—How well can you see?
	SH5—How well are you able to move around?