Table 1 Search strategy used for OVID Medline database

1

(old* OR senior* OR elder* OR geriatric*).ti,ab

2

aged/

3

1 OR 2

4

(lonel* OR social-isolation OR social-support OR social-deprivation).ti,ab

5

social-isolation/ OR loneliness/

6

4 OR 5

7

(communi* OR neighbo?r* OR cultur* OR polic* OR built environment* OR soci?-ecolog* OR environment* OR societ* OR ecologic?-model).ti,ab

8

*social-environment/ OR health-policy/ OR *residence-characteristics/

9

7 OR 8

10

3 AND 6 AND 9