Table 1.

Behavioural and activity markers of social isolation and loneliness.

SI and Loneliness Activity Markers	References
Dependence for ADLs and IADLs	[32]
Physical inactivity/	[7,8,9,33]
Sedentary behaviour	[7,34]
Poor sleep quality	[7,35]
Eating and diet	[9,36]
Time out of home	[26,27,37]
Daytime dysfunction	[38]
Telephone use	[39]
Computer use	[40]