Hoogendijk, EO, Afilalo, J, Ensrud, KE, et al. Frailty: implications for clinical practice and public health. Lancet 2019;394(10206):1365–1375. https://doi.org/10.1016/s0140-6736(19)31786-6
Fried, LP, Tangen, CM, Walston, J, et al. Frailty in older adults: evidence for a phenotype. J Gerontol A Biol Sci Med Sci 2001;56(3):M146–156. https://doi.org/10.1093/gerona/56.3.M146
Yamada, M, Arai, H. Social Frailty Predicts Incident Disability and Mortality Among Community-Dwelling Japanese Older Adults. J Am Med Dir Assoc 2018;19(12):1099–1103. https://doi.org/10.1016/j.jamda.2018.09.013
Teo, N, Gao, Q, Nyunt, MSZ, Wee, SL, Ng, TP. Social Frailty and Functional Disability: Findings From the Singapore Longitudinal Ageing Studies. J Am Med Dir Assoc 2017;18(7):637.e613–637.e619. https://doi.org/10.1016/j.jamda.2017.04.015
Makizako, H, Shimada, H, Tsutsumimoto, K, et al. Social Frailty in Community-Dwelling Older Adults as a Risk Factor for Disability. J Am Med Dir Assoc 2015;16(11):1003e1007–1011. https://doi.org/10.1016/j.jamda.2015.08.023
Ragusa, FS, Veronese, N, Smith, L, et al. Social frailty increases the risk of all-cause mortality: A longitudinal analysis of the English Longitudinal Study of Ageing. Exp Gerontol 2022;167:111901. https://doi.org/10.1016/j.exger.2022.111901
Makizako, H, Shimada, H, Doi, T, et al. Social Frailty Leads to the Development of Physical Frailty among Physically Non-Frail Adults: A Four-Year Follow-Up Longitudinal Cohort Study. Int J Environ Res Public Health 2018;15(3). https://doi.org/10.3390/ijerph15030490
Pek, K, Chew, J, Lim, JP, et al. Social Frailty Is Independently Associated with Mood, Nutrition, Physical Performance, and Physical Activity: Insights from a Theory-Guided Approach. Int J Environ Res Public Health 2020;17(12). https://doi.org/10.3390/ijerph17124239
Dent, E, Morley, JE, Cruz-Jentoft, AJ, et al. Physical Frailty: ICFSR International Clinical Practice Guidelines for Identification and Management. J Nutr Health Aging 2019;23(9):771–787. https://doi.org/10.1007/s12603-019-1273-z
Dent, E, Lien, C, Lim, WS, et al. The Asia-Pacific Clinical Practice Guidelines for the Management of Frailty. J Am Med Dir Assoc 2017;18(7):564–575. https://doi.org/10.1016/j.jamda.2017.04.018
Zhang, XM, Cao, S, Gao, M, et al. The Prevalence of Social Frailty Among Older Adults: A Systematic Review and Meta-Analysis. J Am Med Dir Assoc 2023;24(1):29–37.e29. https://doi.org/10.1016/j.jamda.2022.10.007
Bunt, S, Steverink, N, Olthof, J, van der Schans, CP, Hobbelen, JSM. Social frailty in older adults: a scoping review. European journal of ageing 2017;14(3):323–334. https://doi.org/10.1007/s10433-017-0414-7
Zhang, X, Tan, SS, Franse, CB, et al. Longitudinal Association Between Physical Activity and Frailty Among Community-Dwelling Older Adults. J Am Geriatr Soc 2020;68(7):1484–1493. https://doi.org/10.1111/jgs.16391
Nagai, K, Tamaki, K, Kusunoki, H, et al. Physical frailty predicts the development of social frailty: a prospective cohort study. BMC Geriatr 2020;20(1):403. https://doi.org/10.1186/s12877-020-01814-2
Doi, T, Tsutsumimoto, K, Nakakubo, S, et al. Associations Between Active Mobility Index and Disability. J Am Med Dir Assoc 2022;23(8):1335–1341. https://doi.org/10.1016/j.jamda.2021.08.036
Kurita, S, Doi, T, Tsutsumimoto, K, et al. Association between Active Mobility Index and sarcopenia among Japanese community-dwelling older adults. Journal of cachexia, sarcopenia and muscle 2022;13(3):1919–1926. https://doi.org/10.1002/jcsm.12994
Shimada, H, Makizako, H, Lee, S, et al. Impact of Cognitive Frailty on Daily Activities in Older Persons. J Nutr Health Aging 2016;20(7):729–735. https://doi.org/10.1007/s12603-016-0685-2
Folstein, MF, Folstein, SE, McHugh, PR. «Mini-mental state». A practical method for grading the cognitive state of patients for the clinician. J Psychiatr Res 1975;12(3):189–198. 0022-3956(75)90026-6
Kurita, S, Doi, T, Tsutsumimoto, K, et al. Associations between Active Mobility Index and objectively measured physical activity among older adults. Aging Clin Exp Res 2023;35(1):147–153. https://doi.org/10.1007/s40520-022-02256-z
Tsutsumimoto, K, Doi, T, Makizako, H, et al. Social Frailty Has a Stronger Impact on the Onset of Depressive Symptoms than Physical Frailty or Cognitive Impairment: A 4-Year Follow-up Longitudinal Cohort Study. J Am Med Dir Assoc 2018;19(6):504–510. https://doi.org/10.1016/j.jamda.2018.02.008
Yesavage, JA. Geriatric Depression Scale. Psychopharmacol Bull 1988;24(4):709–711.
Tsutsui, T, Muramatsu, N. Care-needs certification in the long-term care insurance system of Japan. J Am Geriatr Soc 2005;53(3):522–527. https://doi.org/10.1111/j.1532-5415.2005.53175.x
Gobbens, RJ, van Assen, MA, Luijkx, KG, Wijnen-Sponselee, MT, Schols, JM. Determinants of frailty. J Am Med Dir Assoc 2010;11(5):356–364. https://doi.org/10.1016/j.jamda.2009.11.008
Gale, CR, Westbury, L, Cooper, C. Social isolation and loneliness as risk factors for the progression of frailty: the English Longitudinal Study of Ageing. Age Ageing 2018;47(3):392–397. https://doi.org/10.1093/ageing/afx188
Davies, K, Maharani, A, Chandola, T, Todd, C, Pendleton, N. The longitudinal relationship between loneliness, social isolation, and frailty in older adults in England: a prospective analysis. Lancet Healthy Longev 2021;2(2):e70–e77. https://doi.org/10.1016/S2666-7568(20)30038-6