Table 1.

Dimensions measured in the questionnaire.

Demographic factors
	Age
	Sex
	Ethnic group
	Education level
Healthy lifestyle
	Smoking status
	Alcohol consumption
	Self-rated heath status
Depression measurement
	Center of Epidemiological Studies Depression Scale (CESD)
Mobility investigation (Have difficulty with the following actions)
	Squat
	Raise both hands
	Pick up objects with fingers
	Lift an 11-kg object
	Walk up two to three floors or 200–300 m
Relative and friend (RF) support
	The RF were willing to listen to their worries
	The r RF cared about them
	Satisfaction with caring from RF
	The RF were hypercritical to what they did