Table 2.

Descriptions of functional limitations in studies included.

Types of or Terms Used for Functional Limitations	Definition Provided	Age Group (Years)	Mean Age (Years)
Low vision [22]	Visual acuity ≤0.3 (equal to 6/18)	Adults: no minimum age specified	76
Severe visual impairment [23]	Visual acuity ≤6/24	Older adults ≥75	83.6
Paraplegia [21]	N/A	Adult: no minimum age specified	32.6
Functional limitation [24]	Being considered for housing adaptation	Adults >18	71
Functional impairment [32]	Problems in one or more areas of the Functional Independence Measure motor scale	Older adults: no minimum age specified	70.7
Functional difficulty [25,26,27]	Self-reported difficulties or need for help in at least one in ADL, and at least two in IADL	Older adults ≥70	79 [25,26,27]
Disability [29,30,31,33]	Recipients of housing adaptation [29]	All age groups	71 [29]
	Problems in everyday life and requesting home modifications related to at least one of areas: getting in and out of the home, mobility indoors, self-care in the bathroom [30,31]	Adults ≥40	75.3 [30] 75.1 [31]
	Limitations in kind and amount of activities or work, receipt of any form of insurance or financial support because of disability, limitation in sensation or communication, or use of mobility devices, artificial limb, etc. [33]	Adults >18	Not provided
Frail older [34]	Fried frailty criteria ≥3, and losing functional autonomy as per Functional Autonomy Measure System Profile	Older adults ≥65	83.4
Dementia [28]	Not provided	Adults: no minimum age specified	82