Table 1.
Classification of Frailty Instruments into Definitional Domains
| Frailty Definitions | Abstract Terms Included in Definition | Count of definitions used* |
|---|---|---|
| Fried | CHS (adapted, modified, revised, simplified), phenotype, physical frailty, SOF, syndrome, PLFI | 167 |
| Rockwood | Frailty Index (acute, Japanese, modified, revised), the CSHA, CDI, Deficit-Accumulation Frailty Index, Home Care Frailty Scale (interRAI), SHARE-FI index, FI-B, FI-CD | 99 |
| Clinical Frailty Scale | Clinical Frailty Scale | 18 |
| FRAIL Scale | FRAIL Scale | 15 |
| Edmonton Frail Scale | Edmonton Frail Scale | 12 |
| Tilburg Frailty Indicator | Tilburg Frailty Indicator | 11 |
| Functional Assessments | ADL, the Short Physical Performance Battery score, the International Myeloma Working Group Frailty Score, Performance-based Frailty, EMS, Brighton Mobility Index, Mob-T Scale, self-selected normal gait speed, Karnofsky Performance Index, Katz Index of Dependence, Braden Scale, Morse fall risk score, Functional Independence Measure | 24 |
| Groningen Frailty Indicator | Groningen Frailty Indicator | 12 |
| Claims | Codes or algorithms derived from administrative data | 4 |
| Other | Buchmann Criteria, EASY-Care Two step Older people Screening, FORECAST, Frailty (self-reported), Frailty Risk Score, Geriatric 8 Screening Tool, Kihon Checklist, LOFS, MFS, RAND-36 questionnaire, RAI, Syndrome, Vulnerable Elders Survey, Strawbridge questionnaire, Balducci score, TRST, ISAR scale, CHESS scale, Prognostic Frailty Score, PRISMA-7 Questionnaire, Multidimensional Prognostic Index, Short Form-36 Health Survey, PHQ-9, the CGA | 48 |
ADL = Activities of Daily Living; CDI = Cumulative Deficit Index; CGA = Comprehensive Genatnc Assessment; CHESS = Changes in Health, End-Stage Disease and Signs and Symptoms scale; CHS = Cardiovascular Health Study; CSHA = Canadian Study of Health and Aging; EMS = Elderly Mobility Scale; FI-B = biomarker-based frailty index ; FI-CD = clinical deficits frailty index; FORECAST = Frailty predicts death One yeaR after Elective CArdiac Surgery Test; FRAIL = Fatigue, Resistance, Ambulation, Illnesses, Loss of Weight; ISAR = Identification of Seniors at Risk scale; LOFS = Leuven Oncogeriatric Frailty Score; MFS = Multidimensional Frailty Score; Mob-T = Mobility-Tiredness Scale; PHQ-9 = Patient Health Questionnaire-9; PLFI = Paulson-Lichtenberg Frailty Index; PRISMA-7 = Program of Research on Integration of Services for the Maintenance of Autonomy-7; RAI = Risk Analysis Index; SHARE-FI index = Survey of Health, Ageing and Retirement in Europe-Frailty Index; SOF = Study of Osteoporotic Fractures; TRST = Triage Risk Screening Tool *n definitions are greater than 348 because 35 abstracts reported more than one definition