Table 2.

Authors	Definitions of homebound status based on self-reported behaviors
Williams and Butters 199237	Homebound was defined as a person who is unable to get out of the house morethan 2 days per week because of a physical or medical limitation.
Gilbert, Branch, et al. 199249	Subjects were asked “About how often do you get out of your house or building for any reason?” Four answers were provided and those who chose “never or almost never except for emergencies” were operationally defined as homebound.
Bruce and McNamara 199228	Subjects were asked whether or not they stayed in their beds or in a chair for most or all of the day during the last 2 weeks; and whether or not they had stayed indoors most or all of the day during the last 2 weeks. The two questions were combined resulting in a three level indicator of degree of homebound status.
Lindesay 199350	Homebound was defined as “not getting beyond the door for at least the last month”.
Ganguli, Fox, et al.12	Homebound status was determined by responses to the question “How often do you get out of the house?” Those left the house once or less than once per week were classified as homebound.
Kono and Kanagawa 200114	Ten behaviors were asked and measured. Those who indicated that they had not left the house within the week prior to the interview were classified as being homebound.