Table 2.

Summary of naturally occurring retirement community inclusion criteria.

Percentage and age	Citation	Studies in which the citations were found
50% are older adults	Hunt and Gunter-Hunt [3]	[17,21,29]
40%-50% of the population is aged >60 years	New York State definition [41]	[37]
50% of the residents aged >65 years	Hunt [42]	[24,33]
50% of the residents should be aged >60 years	Hunt and Ross [43]	[31,37,40]
50% of the residents are aged ≥60 years	Lanspery [44]	[38]
≥50% of the population is aged at least 50 years	Hunt [30]	[39]