SearleSDMitnitskiAGahbauerEA, et al. A standard procedure for creating a frailty index. BMC Geriatr2008; 8: 24.
2.
BelvisiDCanevelliMBaioneV, et al. Operationalization of a frailty index in patients with multiple sclerosis: A cross-sectional investigation. Mult Scler2021; 27(12): 1939–1947.
3.
AyrignacXLarochelleCKeezerM, et al. Frailty in ageing persons with multiple sclerosis. Mult Scler2021; 27(4): 613–620.
4.
CleggABatesCYoungJ, et al. Development and validation of an electronic frailty index using routine primary care electronic health record data. Age Ageing2016; 45(3): 353–360.
5.
HanlonPNichollBIJaniBD, et al. Frailty and pre-frailty in middle-aged and older adults and its association with multimorbidity and mortality: A prospective analysis of 493 737 UK Biobank participants. Lancet Publ Health2018; 3(7): e323–e332.
