Table 1. Frequency of use of each rating scale, presence of criteria for social frailty, and content of the ratings.

TFI, Tilburg Frailty Indicator; SFS-8, 8-item Social Frailty Scale; GFI, Groningen Frailty Indicator; LSNS-6, Lubben Social Network Scale-6; CFAI, Comprehensive Frailty Assessment Instrument; HALFT, Help, Participation, Loneliness, Financial, and Talk; KFS, Korean Frailty Scale; FGE, Functional Geriatric Evaluation

Rating Scale	Frequency of Use (Number of cases)	Existence of Judgment Criteria (Yes/No)	Factors Included in the Evaluation
TFI	34% (29)	15/29	Living alone, lack of social relationships, lack of social support
Makizako method	31% (27)	27/27	Living alone, frequency of going out, visiting friends, helping friends and family, talking every day
Yamada method	6% (5)	5/5	Living alone, financial difficulties, lack of social activities, frequency of contact with neighbors
SFS-8	3% (3)	3/3	Living alone, visiting friends, talking to family and friends, confidants, frequency of going out, eating with someone, financial constraints, daily conversation
GFI	3% (3)	1/3	Absence of neighbors, sense of abandonment, emptiness
LSNS-6	3% (3)	2/3	Number of family and friends (see/talk regularly, can talk privately, can ask for help)
CFAI	3% (3)	0/3	Social loneliness, social support
HALFT	2% (2)	2/2	Loneliness, support from others, limited social activities, financial difficulties, ability to talk to someone
KFS	2% (2)	1/2	Social network, social support
FGE	2% (2)	0/2	Social and economic resources