Table 3.

Study Demographics: Quantitative Study Demographics.

Author(s)	Country	Study Population	N	Age
Bonnewyn et al., 2009	Europe	Older adults living in Belgium, France, Germany, Italy, The Netherlands, and Spain	4401	≥65
Djukanović et al., 2015	Sweden	Residents of Sweden	6659	65–80
Eriksson-Backa et al., 2018	Finland	Finnish seniors	273	65–79
Garg et al., 2017	United States	Medicare beneficiaries	11,270	≥65
Garrido et al., 2011	United States	Older community-dwelling adults in the United States	1681	≥65
Gur-Yaish et al., 2016	Israel	Older Jewish population in Israel	509	66–92
Hartvigsen et al., 2006	Denmark	Danish twins	1844	72–102
Hohls et al., 2021	Germany	Participants of the AgeQualiDe-Study (a German study on the oldest-old primary care patients)	155	≥85
Horng et al., 2014	Taiwan	Older Taiwanese people	2715	≥65
Kagan et al., 2018	Israel	Older men in Israel who speak Hebrew	256	≥65
Krishnan and Lim 2012	Singapore	Single elderly Indian men who speak Tamil and receive state financial assistance	75	65–86
Lau et al., 2014	China	Chinese older adults recruited from health centers in Macao, China	301	65–91