Review Article

Frailty and Age-Associated Assessments Associated with Chronic Kidney Disease and Transplantation Outcomes

Table 2

Description of assessment types.

Assessment typePurposeComponentsScoringCommentsReferences

Frailty
Fried Frailty Phenotype (FFP)Determine if an individual is frail, nonfrail, or at risk of becoming frailUnintentional weight loss
Poor endurance (self-reported exhaustion)
Slowness (walking speed)
Weakness (grip strength)
Low physical activity level
Test score range: 0–5
Frail: ≥3 criteria present
Prefrail: 1-2 criteria present
Nonfrail: 0 criteria present
Access to dynamometer and stopwatch
Walking space to measure gait speed
Fried et al., 2001 [4]
McAdams-DeMarco et al., 2019 [5]
McAdams-DeMarco et al., 2018 [6]
Short Physical Performance Battery (SPPB)Determine an individual’s frailty statusGait speed
Standing balance test
Chair rise test
Test score range: 0–12 (each component scored 0–3)
Frail: ≤9
Nonfrail: >9
Access to chair and stopwatch
Walking space to measure gait speed
Bandinelli et al., 2006 [7]
Chen et al., 2022 [8]
Nastasi et al., 2018 [9]
Frailty Index (FI)/Deficit Accumulation Index (DAI)Determine an individual’s frailty status based on accumulation of deficitsVary in components measured number of itemized variables. Typically, the index contains somewhere from 30 to 70 items.Higher proportion of deficit present equates to a higher likelihood that individual will be frailVariability in assessment types and number of variables
Combined with other assessments such as the FI-CGA (frailty index combined with the comprehensive geriatric assessment)
Rockwood et al., 2007 [10]
Varughese et al., 2021 [11]
Biomarker-Based Frailty IndexDetermine an individual’s frailty status based on biomarker blood concentrationsEvaluation of blood biomarker concentrations (inflammatory, immune, hormone)Varies depending on biomarkers used and patient populationCutoff values vary
Biomarkers are a naturally part of aging and usage of this index would require coinciding with another frailty index
Haugen et al., 2021 [12]
Mitnitski et al., 2015 [13]
Baylis et al., 2013 [14]

Sarcopenia
Computed tomography (CT)To quantify muscle mass in a patient4th lumbar vertebrae abdominal CT scan to obtain paraspinal muscle surface areaMuscle mass was quantified by a skilled professional using an equation cited by Shen et al. [15]Requires appropriate personal and financial resources
Not feasible or practical for critically ill patients or busy treatment areas
Shen et al., 2004 [15]
Kashani et al., 2017 [16]
Wong et al., 2022 [17]
Sarcopenia Index (SI)To provide an alternative method of quantifying muscle mass other than through CT or MRISerum creatinine to serum cystatin C ratio × 100No definite ranges for patients; however, it is noted that SI is directly related to creatinine from muscles, so lower SI is suggested with reduced muscle massCannot be applied to patients with acute kidney diseaseKashani et al., 2017 [16]
Barreto et al., 2019 [18]
Bioelectrical impedance analysis (BIA)To quantify muscle mass through the resistance of current run through the bodyBIA analyzer and electrodesMuscle mass was calculated by an equation cited by Janssen et al. [19]Validity depends on hydration statusJanssen et al., 2000 [19]
Pereira et al., 2015 [20]

Nutrition
Comprehensive geriatric assessment (CGA)To assess an elderly frail person’s psychosocial, medical, and functional ability in order to develop a long-term care planIntensity of assessment can vary, where the most intense can include admission into a medical facility, where the patient completes the assessment and receives limited treatment from an interdisciplinary teamVariesCan be costly and time intensiveRubenstein et al., 1991 [21]
Vettoretti et al., 2020 [22]
Malnutrition inflammation score (MIS)To assess malnutrition and inflammation among dialysis patients to evaluate clinical outcomesContains 10 components with 4 levels of intensity within each component. The lowest score is 0 and highest score is 3 for each component>7 is considered is malnourished
Maximum score is 30
May not correlate completely with other laboratory and clinical measurementsKalantar-Zadeh et al., 2001 [23]
Vettoretti et al., 2020 [22]
7-point subjective global assessment (SGA) toolEvaluates nutritional status based on standardized valuesConsiders 4 domains: weight change history, physical examination for fat loss, history of diet and gastrointestinal issues, and muscle wasting<3 is considered severely malnourished
Maximum score is 7
High intr-observer reliability suggests follow-up assessmentsVisser et al., 1999 [24]
Windahl et al., 2021 [25]
Windahl et al., 2018 [26]

Cognition
Mini Mental State Examination (MMSE)To examine one’s mental state, more specifically the cognitive aspects of mental functions11-question measure used to test 5 domains of cognition: recall, language, registration, orientation, and calculation and attention≤23 is indicative of cognitive impairment
Maximum score is 30
Does not equal a diagnosis for a mental conditionFolstein et al., 1975 [27]
Vettoretti et al., 2020 [22]
Nixon et al., 2020 [28]
Modified Mini Mental State (3MS)Improved MMSEAdditional test items to test for a larger variety of one’s functional cognitionThe maximum score is now 100More sensitivity compared to MMSETeng and Chui, 1987 [29]
Burns et al., 2018 [30]
Chu et al., 2019 [31]
Haugen et al., 2018 [32]

Depression
Beck Depression Inventory-II (BDI-II)Determines the presence and severity of depression within an individual21-item inventory that includes sadness, self-criticalness, loss of pleasure, and guilty feelingsTotal score range: 0–63 (each item scored 0–3)
Nondepressed: 0–12
Dysphoric: 13–19
Dysphoric or depressed: 20–63
Scores may be affected by social desirability biasDozois et al., 1998 [33]
García-Batista et al., 2018 [34]
Duan et al., 2021 [35]
GDS-15 (Geriatric Depression Scale-15)Screens for the presence of depression within the elderly population15-item assessment consisting of questions pertaining to self and self in relation to others answered in a “yes/no” formatTotal score range: 0–15 (each question scored 0 or 1)
Normal: 0–4
Mild depression: 5–9
Moderate to severe depression: 10–15
Decreased completion rate with decreased cognitive functionConradsson et al., 2013 [36]
Feng et al., 2013 [37]
Wang et al., 2019 [38]

Health-related quality of life (HRQOL)
RAND 36-Item Health Survey Version 1.0 (SF-36)Determine the health status of the population of interest and evaluate the effect of healthcare interventions36-item assessment that covers 8 health concepts: physical functioning, bodily pain, role limitations due to physical health, role limitations due to emotional problems, emotional wellbeing, social functioning, energy/fatigue, general health perceptionAssessment scored 0 (worst health) to 100 (best health)Accounts for the variation in the number of chronic illnesses
Assessment may be limited to be taken by individuals with higher cognitive and physical functioning
Hays et al., 1993 [39]
VanderZee et al., 1996 [40]
Andresen 1999 [41]
Muflih et al., 2021 [42]