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Printed on 7/20/2026
For informational purposes only. This is not medical advice.
The FRAIL scale is a rapid screening instrument that scores five domains: Fatigue, Resistance (stair climbing), Ambulation (walking ability), Illnesses (comorbidity burden), and Loss of weight. Total score ranges from 0 to 5 and stratifies patients as robust, pre-frail, or frail. It is commonly used in outpatient geriatrics, primary care, and perioperative assessment to identify vulnerability and trigger preventive interventions.
Formula: FRAIL score = sum of 5 yes/no domains, each scored 0 or 1; total range 0-5.
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The FRAIL Scale is a brief 5-item interviewer-administered or self-completed questionnaire. Each item is scored 1 if the criterion is present, 0 if absent. The five items are: (1) Fatigue — 'How much of the time during the past 4 weeks did you feel tired?' Score 1 (frailty criterion) if the answer is 'All of the time' or 'Most of the time'. Score 0 if 'Some of the time,' 'A little of the time,' or 'None of the time'. (2) Resistance — 'By yourself and not using aids, do you have any difficulty walking up 10 steps without resting?' Score 1 if Yes (has difficulty). Score 0 if No. (3) Ambulation — 'By yourself and not using aids, do you have any difficulty walking several hundred yards?' (equivalent to approximately 300–500 metres or one to three city blocks). Score 1 if Yes (has difficulty). Score 0 if No. (4) Illnesses — 'Has a doctor ever told you that you have 5 or more of the following illnesses: hypertension, diabetes, cancer (other than minor skin cancer), chronic lung disease, heart attack, heart failure, angina, asthma, arthritis, stroke, kidney disease?' Score 1 if Yes (5 or more illnesses). Score 0 if No. (5) Loss of weight — 'How much do you weigh with your clothes on but without shoes?' Compare to last year's weight. Score 1 if weight loss ≥5% in the past year. Score 0 if weight loss <5% or unknown (though unknown should prompt verification).
Add the five item scores to produce the total FRAIL Scale score (range 0–5). Frailty category assignment: 0 = Robust — no frailty criteria met. Normal aging without excess vulnerability. Standard preventive care, annual screening. 1–2 = Pre-frail — 1 or 2 frailty criteria present. Reduced physiological reserve, increased vulnerability but not yet meeting frailty threshold. THIS GROUP IS THE KEY INTERVENTION TARGET — pre-frailty is highly modifiable and targeted interventions can prevent transition to frailty. 3–5 = Frail — 3 or more frailty criteria met. Established frailty with substantially increased risk of falls, hospitalization, disability, and mortality. Requires comprehensive geriatric assessment (CGA) and multidisciplinary frailty management plan. Higher scores within the frail category (4–5) indicate more severe frailty and greater urgency for intervention.
For robust patients (score 0): continue standard preventive care; annual FRAIL reassessment during wellness visits. For pre-frail patients (score 1–2): initiate preventive interventions before frailty develops: (a) Physical activity referral — at minimum 150 minutes/week moderate aerobic activity plus 2x/week resistance training; (b) Protein optimization — ≥1.0–1.2 g/kg/day dietary protein; (c) Medication review — deprescribing polypharmacy (particularly falls-risk medications: sedatives, anticholinergics); (d) Identify and treat contributing conditions (depression, pain, malnutrition, anaemia); (e) Review social support and community engagement. For frail patients (score 3–5): referral for comprehensive geriatric assessment (CGA) — multidisciplinary review of physical function, cognitive status, nutrition, medications, social support, and psychosocial factors. Specific interventions: structured exercise program (supervised), high-protein nutritional support, medication rationalization, management of contributing comorbidities, falls prevention program, advance care planning discussion. Serial FRAIL reassessment at 6-month intervals tracks response to interventions and frailty trajectory.
Primary care physicians, geriatricians, nurse practitioners, practice nurses
The FRAIL Scale is a practical frailty screening tool for primary care settings where administration time is limited. At 2–3 minutes per patient, FRAIL can be integrated into annual wellness visits or routine chronic disease follow-up appointments for all patients aged 65 and over. NHS England's Identification and Management of Frailty protocol uses the eFI (Electronic Frailty Index) for population-level identification, but FRAIL Scale provides rapid point-of-care clinical screening. Identification of pre-frail patients (FRAIL 1–2) in primary care represents the highest-yield frailty intervention opportunity — pre-frailty is reversible with targeted exercise, nutrition, and medication optimization, whereas established frailty (3–5) is harder to reverse and requires intensive multidisciplinary input.
Surgeons, anesthesiologists, perioperative medicine clinicians, geriatric surgery programs
FRAIL Scale frailty is an independent predictor of post-operative morbidity, mortality, and non-home discharge in older adults undergoing major surgery. A FRAIL score ≥3 before major elective surgery identifies patients with 2–3 times higher surgical risk than their non-frail counterparts, regardless of conventional surgical risk scores. AGS/ACS Best Practices Guidelines for optimal pre-operative assessment of geriatric surgical patients include frailty screening (FRAIL or equivalent) as a recommended component. FRAIL ≥3 triggers: pre-operative CGA; prehabilitation planning (exercise and nutrition optimization in 4–8 weeks before surgery); goals-of-care discussion; and enhanced post-operative rehabilitation pathway.
Geriatricians, cardiologists, oncologists, chronic disease nurses
FRAIL item 4 (5+ chronic illnesses) directly captures polypharmacy-risk multimorbidity burden — a key driver of frailty. In patients with multiple chronic conditions, FRAIL screening identifies those whose functional status and resilience are most compromised by disease burden. Frail patients with heart failure, COPD, diabetes, and CKD have substantially worse outcomes than non-frail patients with the same conditions. FRAIL score guides treatment intensity decisions: robust patients may benefit from aggressive multimorbidity management; frail patients may need careful benefit-risk analysis of adding new medications, invasive procedures, or intensive monitoring. FRAIL screening in cardiology and oncology clinics identifies patients who need frailty-informed treatment planning.
Geriatric liaison nurses, rehabilitation physicians, post-acute care coordinators
Acute hospitalization accelerates frailty progression — up to 30% of non-frail older adults develop new frailty during a hospitalization, and pre-existing frailty worsens substantially. FRAIL screening at hospital admission establishes a baseline; FRAIL reassessment at discharge and 4–6 weeks post-discharge tracks hospitalization-related frailty progression. Post-hospitalization frailty interventions: targeted rehabilitation; early mobility program (HELP — Hospital Elder Life Program); protein supplementation during recovery; early medical follow-up (within 2 weeks); and social support assessment. FRAIL score at discharge predicts 30-day readmission risk, supporting discharge planning decisions about post-acute care level.
Geriatric oncologists, oncology nurses, cancer multidisciplinary team coordinators
Frailty, assessed by FRAIL or equivalent measures, is a key predictor of chemotherapy toxicity, treatment-related adverse events, and survival in older adults with cancer. SIOG (International Society of Geriatric Oncology) recommends frailty screening as part of geriatric oncology assessment for all patients ≥70 before initiating systemic cancer treatment. FRAIL ≥3 identifies patients who need treatment modifications: dose reduction, less intensive regimens, alternative treatment approaches, or best supportive care discussion. The illnesses item (FRAIL item 4) is particularly relevant in cancer patients who commonly have multiple comorbid conditions contributing to their vulnerability.
While frail patients (FRAIL 3–5) receive most clinical attention, pre-frail patients (FRAIL 1–2) represent the greatest intervention opportunity. Pre-frailty is substantially more reversible than established frailty: RCTs show that targeted exercise and nutritional interventions in pre-frail older adults can prevent progression to frailty in 30–50% of cases over 12 months. Once frailty is established (FRAIL 3–5), interventions are beneficial but have smaller average effect sizes on physical function. Identifying and treating pre-frail patients in primary care — before they develop falls, hospitalization, or disability — is a high-impact preventive strategy that reduces downstream healthcare utilization.
FRAIL item 1 (fatigue: 'All of the time' or 'Most of the time' tired) captures both physical and psychological exhaustion. Depression is a major cause of fatigue scoring as frailty criterion — a patient who reports constant fatigue primarily due to severe depression may score frailty criteria without the true physiological frailty that drives adverse outcomes. Before attributing fatigue solely to frailty, screen for depression (PHQ-9) and treat underlying causes (anaemia, thyroid disease, cardiac failure, sleep disorder, medications). Conversely, persistent fatigue in an older adult that cannot be explained by a specific treatable condition is itself a marker of physiological vulnerability consistent with frailty.
FRAIL item 4 scores 1 if the patient has 5 or more of 11 specific conditions: hypertension, diabetes, cancer (non-skin), chronic lung disease, heart attack, heart failure, angina, asthma, arthritis, stroke, kidney disease. Verify the diagnosis list from the medical record rather than relying on patient recall alone — patients often underreport or forget diagnoses (particularly if well-controlled). Conversely, some patients believe they have conditions they have not been formally diagnosed with. Check the problem list in the medical record and apply the specific 11-condition list — not all chronic conditions count (e.g., osteoporosis and depression are not in the FRAIL item 4 list).
FRAIL Scale (FRAIL 3–5) identifies patients who need comprehensive geriatric assessment (CGA), not simply the frailty label itself as an endpoint. CGA evaluates: functional status (ADL + IADL); cognitive status (Mini-Cog, MoCA); nutritional status (MNA-SF); medications (polypharmacy review, deprescribing); social support; falls risk; hearing and vision; psychological status. The combination of FRAIL screening + CGA for positives provides both efficient triage and actionable clinical information. CGA alone (without prior FRAIL screening) is resource-intensive; FRAIL screening enables CGA to be targeted to patients most likely to benefit.
The FRAIL Scale (particularly items 2, 3 — resistance and ambulation) and SARC-F (particularly items 1, 2, 3 — strength, walking, chair rise) assess overlapping but distinct constructs. Sarcopenia (low muscle mass and strength) is a major contributor to frailty but not identical to it. Administering both FRAIL and SARC-F takes less than 5 minutes total and provides more complete characterization: FRAIL positive + SARC-F positive = combined frailty + sarcopenia profile requiring both frailty management (CGA, social support) and sarcopenia treatment (resistance training, protein supplementation). FRAIL positive + SARC-F negative = non-sarcopenic frailty — may reflect more fatigue-dominated or comorbidity-dominated frailty.
Unlike many chronic disease diagnoses, frailty status is dynamic and can improve or worsen over months. Annual FRAIL screening in primary care tracks trajectory: improvement from frail to pre-frail after targeted intervention demonstrates treatment response. Worsening from robust to pre-frail triggers intervention before frailty develops. In clinical trials, FRAIL score change is a validated outcome measure for frailty intervention effectiveness. Document the FRAIL score at every assessment with the date, enable trend tracking. A patient who was FRAIL 1 last year and is now FRAIL 3 has experienced significant frailty progression requiring investigation (new illness, medication change, social loss, acute event) and escalated intervention.
FRAIL Scale developed by Morley JE et al. (J Nutr Health Aging 2012). Validated against Fried phenotype and clinical outcomes. Siriwardhana DD et al. systematic review (Aging Clin Exp Res 2017) — 7 validation studies across community and clinical settings; AUC 0.71–0.79 for mortality and disability prediction. Pre-frailty intervention: Ng TP et al. (J Gerontol 2015) — exercise + nutrition supplementation in pre-frail reduced frailty progression. Fried Phenotype comparator: Fried LP et al. (J Gerontol 2001). FRAIL Scale surgical risk: Robinson TN et al. (J Am Coll Surg 2019) — FRAIL ≥2 predicted 30-day post-operative complications and mortality independent of ASA score.
Higher FRAIL scores indicate greater physiologic vulnerability and higher risk of falls, hospitalization, disability, and mortality.
Use in older or medically complex adults during annual wellness visits, preoperative assessment, chronic disease follow-up, and post-hospitalization re-evaluation.
FRAIL is intentionally brief and may miss nuanced contributors to frailty. It should be complemented by full functional, nutritional, cognitive, and social assessment when abnormal.
For related assessments, see Clinical Frailty Scale, SARC-F and Katz ADL.
Disclaimer: This tool is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with questions about your health.
April 21, 2026 · trust-baseline
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