Table 4. Excluded studies after eligibility verification.

No	Title	Authors	Citation	Reason for Exclusion
1	Social and Societal Implications of Frailty, Including Impact on Canadian Healthcare Systems.	Andrew et al.	J Frailty Aging. 2018;7(4):217-223.	Submitted as a review or opinion piece, not as an original study.
2	Consensus on Components of Frailty Using the Delphi Method: Korean Frailty and Aging Cohort Study.	Kim et al.	J Nutr Health Aging. 2021;25(2):242-247.	Study aimed at constructing a research model; survey conducted on experts.
3	Key Stakeholders' Views on the Quality of Care and Services Available to Frail Seniors in Canada.	Giguere et al.	BMC Geriatr. 2018 Nov 26;18(1):290.	Qualitative study involving patients, healthcare and care workers; did not directly assess social frailty.
4	Assessing the Impact of a Community-Based Pro-active Monitoring Program Addressing the Need for Care of Community-Dwelling Citizens Aged More than 80: Protocol for a Prospective Pragmatic Trial and Results of the Baseline Assessment.	Liotta et al.	Transl Med UniSa. 2020 Dec 31;23:22-27.	Not focused on investigating social frailty.
5	Adaptation of a Social Vulnerability Index for Measuring Social Frailty Among East African Women.	Prabhu et al.	BMC Public Health. 2022 Jan 24;22(1):167.	Included a design that involved patients with diseases.
6	Social Frailty as Social Aspects of Frailty: Research, Practical Activities, and Prospects.	Fujiwara et al.	Geriatr Gerontol Int. 2022 Dec;22(12):991-996.	Submitted as a review or opinion piece, not as an original study.
7	Exploring Perceived Challenges of Self‐management in Low‐Income Older People with Hypertension: A Qualitative Study.	Zhang et al.	Int J Nurs Pract. 2022 Jun;28(3):e13059.	Included a design that involved patients with diseases.
8	Long-Term Life Care at Home: A Bottom up, Community-Driven Model for Long-Term Care Reform in Canada.	Giosa et al.	First North American Conference on Integrated Care.	Was an opinion piece and did not assess social frailty in subjects.
9	Adaptation of a social vulnerability index for measuring social frailty among East African women.	Prabhu et al.	BMC Public Health. 2022 Jan 24;22(1):167.	Study aimed at validating the evaluation method.
10	Beyond Physical Impairment: The Role of Social Frailty in Heart Failure.	Keshvani et al.	J Am Heart Assoc. 2021 Sep 7;10(17):e022187.	Was an opinion piece and did not assess social frailty in subjects.
11	COVID-19 Pandemic Control Measures: Impact on Social Frailty and Health Outcomes in Non-Frail Community-Dwelling Older Adults.	Pek et al.	J Nutr Health Aging. 2021;25(6):816-818.	Was an opinion piece and did not assess social frailty in subjects.
12	Key stakeholders' views on the quality of care and services available to frail seniors in Canada.	Giguere et al.	BMC Geriatr. 2018 Nov 26;18(1):290.	Included a design that involved patients with diseases.
13	Falling through the cracks: a case study of how a timely integrated approach can reverse frailty.	Freer	Br J Community Nurs. 2020 Aug 2;25(8):382-387.	Was a case report on a single subject and did not validate the assessment of social frailty.