Functional Assessment: ADLs, Katz & Barthel, APGAR, MMDST
ADLs and Functional Status
Activities of daily living (ADLs) are essential and routine tasks that most young, healthy individuals can perform without assistance.
Inability to accomplish essential ADLs may lead to unsafe conditions and poor quality of life.
Definition and Purpose of ADLs
ADL is a term used to collectively describe fundamental skills required to independently care for oneself (e.g., eating, bathing, mobility).
First coined by Sidney Katz in 1950.
ADL is used as an indicator of a person’s functional status.
BADL vs IADL
Basic ADLs (BADL) or Physical ADL: skills to manage basic physical needs, including personal hygiene/grooming, dressing, toileting, transferring/ambulating, and eating.
Instrumental Activities of Daily Living (IADLs): more complex activities related to living independently in the community.
Examples include: managing finances and medications, food preparation, housekeeping, laundry.
Instrumental ADLs (IADLs) in more detail
Require more complex thinking and organizational skills; transportation and shopping involve obtaining groceries, attending events, and arranging transportation.
Managing finances includes paying bills and managing financial assets.
Shopping and meal preparation cover all tasks to get a meal on the table, plus shopping for clothing and other daily items.
Housecleaning and home maintenance cover cleaning kitchens after eating, keeping living areas tidy, and ongoing maintenance.
Managing communication with others includes handling telephone and mail.
Managing medications involves obtaining medications and taking them as directed.
Causes and risk factors for limits in ADLs
Aging is a natural process and a common cause of ADL decline.
Medical conditions: musculoskeletal, neurological, circulatory, or sensory diseases can impair physical function.
Cognitive or mental decline can impair ADLs.
Dementia: severe cognitive fluctuations are significantly associated with impaired engagement in ADLs, reducing quality of life.
Social isolation can impair instrumental activities of daily living (IADLs).
Other factors: side effects of medications, home environment, or social support levels.
Hospitalization and acute illnesses can contribute to ADL decline.
Sands et al.: loss of ADL function over one year linked to increased hospital admissions and cognitive decline in frail older adults.
Covinsky et al.: many older individuals discharged with worsened ADL performance compared to pre-admission status.
Measurement of ADL
Defining extent of loss of ADL and IADL helps plan appropriate care and support.
Several checklists exist; there is consensus on some items but variability in how questions are asked.
Commonly used checklists:
Katz scale: assesses basic ADLs, not more advanced activities.
Barthel Index: widely used in rehabilitation and geriatric care to assess functional independence in basic ADLs; useful for stroke patients, elderly, or those recovering from serious illness/injury.
Katz Basic Activities of Daily Living (ADL) Scale
Assesses six ADLs: Bathing, Dressing, Toileting, Transferring, continence, Feeding.
Scoring per item: 0 or 1 (0 = dependence, 1 = independence per item).
Independence total: 6 (6 points) – no supervision or assistance required.
Dependence total: 0 (0 points) – needs supervision or total care for all items.
Interpretation: higher total points indicate greater independence; 6 = HIGH independence; 0 = VERY dependent.
Barthel Index of Activities of Daily Living (BI)
A widely used tool in rehabilitation and geriatric care to assess functional independence in basic ADLs.
Especially helpful for evaluating stroke patients, elderly individuals, or those recovering from serious illness or injury.
Items (each scored 0, 5, 10, or 15):
Feeding, Bathing, Grooming, Dressing, Bowels, Bladder, Toilet Use, Transfers (bed to chair and back), Mobility on level surfaces, Stairs.
Total score ranges from 0 to 100; higher scores = greater independence.
Scoring example (from form): each item contributes specific points; total is the sum of all items.
Administration: can be done by self-report or direct observation; time to complete ranges from a few minutes to ~20 minutes.
Guidelines for interpretation (Barthel):
0–20: Total dependence
21–60: Severe dependence
61–90: Moderate dependence
91–99: Slight dependence
100: Full independence
Practical notes:
The index records what a patient does, not necessarily what they could do.
The need for supervision indicates non-independence.
Use best available evidence and sometimes input from patient, family, or staff; direct testing is not always required.
Performance is usually observed over the preceding 24–48 hours, though longer periods may be relevant.
Middle categories imply the patient provides over 50% of the effort; aids to independence are allowed
Example: BI total score interpretation is commonly linked to independence level and care planning.
APGAR Score (Newborn Assessment)
Purpose: Rapid evaluation at 1 and 5 minutes post-birth; assesses overall well-being of the newborn.
Five signs (APGAR): Appearance (Color), Pulse (Heart rate), Grimace (Reflex irritability), Activity (Muscle tone), Respiration.
Mnemonic: A = Appearance, P = Pulse, G = Grimace, A = Activity, R = Respiration.
Scoring per sign: 0, 1, or 2; total score ranges from 0 to 10.
Interpretation by total score:
7–10: Reassuring/Normal; baby adapting well; routine newborn care.
4–6: Moderately abnormal; mild to moderate distress; may require stimulation, oxygen, or monitoring.
0–3: Critically low/severe depression; immediate resuscitation and intensive neonatal support needed.
Note: APGAR is not a predictive test of future health but a quick assessment of adaptation to extrauterine life.
APGAR Case Scenarios (1- and 5-minute samples)
Case 1: Term newborn with vigorous cry (e.g., Baby John, 39 weeks):
1 minute APGAR total = 9 (Appearance 1, Pulse 2, Grimace 2, Activity 2, Respiration 2) – excellent transition; routine newborn care.
Case 2: Preterm newborn with respiratory distress (e.g., Baby Maya, 32 weeks):
1 minute APGAR total = 4 (Appearance 0, Pulse 1, Grimace 1, Activity 1, Respiration 1) – moderate to severe depression; immediate resuscitation required.
Metro Manila Developmental Screening Test (MMDST)
Purpose: Locally adapted screening tool to assess developmental milestones in Filipino children from birth to 6½ years.
Not an IQ test; not diagnostic; designed for community and clinical use to allow early detection of developmental delays.
Origin: Adapted from the Denver Developmental Screening Test (DDST) by Dr. Phoebe D. Williams for Filipino children.
Domains assessed:
Personal-Social: Interaction with others and self-care abilities.
Fine Motor-Adaptive: Visual-motor coordination and object manipulation.
Language: Hearing, understanding, and verbal expression.
Gross Motor: Physical movements such as sitting, walking, and jumping.
Materials used in the MMDST kit:
Bright red yarn pom-pom, rattle, colored wooden blocks, small bottle, bell, rubber ball, cheese curls, pencil.
MMDST Administration and Procedure
Preliminary steps:
Explain the procedure to the parent/caregiver; emphasize it is a screening tool, not diagnostic.
Establish rapport with parent and child; obtain verbal consent; ensure privacy; check for understanding.
Age calculations and age line:
Compute the exact age of the child on the test date: Age = testdate − dateof_birth.
If prematurity is relevant and child is under 2 years, adjust age by subtracting prematurity weeks (Age_adjusted).
Example: If a child is premature by weeks, adjust the age line by the corresponding weeks/months.
Test administration principles:
There are 105 test items, but not all are administered; items are prioritized along the age line.
Start with Personal-Social items and progress through other domains.
Items marked with an “R” can be passed by report (not directly tested).
Instruct the caregiver to administer exactly as directed in the manual if the caregiver assists.
Do not alter the words or directions; avoid leading questions.
Start with tasks the child can easily complete; praise success.
Allow up to 3 trials per item before scoring as Passed (P) or Failed (F), except for items with specific trial requirements.
If the child is very shy or uncooperative, defer testing or have caregiver administer with explicit instructions.
Aftercare, documentation, and evaluation:
Record each test result for each item as P, F, R, or NO on the 50% hatch mark.
Record overall interpretation at the bottom of the age line.
Discuss results and follow-up actions with the mother/responsible family member using appropriate language.
Grading criteria (rubric): Numerical scoring with four categories:
2: Outstanding/Competent
1: Satisfactory/Progress is Acceptable
0: Not done
Overall scoring: Max 54 points for the MMDST; qualitative descriptors used for proficiency.
Scoring and Administration Details for MMDST
Scoring items:
Items are scored as Passed (P), Failed (F), Refused (R), or No Opportunity (NO).
If an item lies to the left of the child’s age line (i.e., the child cannot perform it at the child’s age), it indicates developmental delay.
If an item lies to the right of the age line (child should be able to perform it at a younger age but can’t), it is acceptable and not a delay.
Administration fidelity:
The exact phrasing and directions must be followed; no rewording.
The test should start with items the child can do; provide praise after correct performance.
If the child is premature, prematurity weeks are subtracted; if the child is older than 2 years, prematurity adjustment may not be necessary.
Items and domains: The manual lists items across Personal-Social, Fine Motor-Adaptive, Language, and Gross Motor, with sample items such as following directions, imitating actions, stacking blocks, drawing, walking, etc. (The slide shows a large set of item prompts and age progression for reference.)
Age Line and Prematurity Adjustments (Practical Notes)
Age line: used to determine which items are applicable for a given child based on age.
If a child is premature and under 2 years old, adjust age by subtracting prematurity weeks (e.g., 7 weeks premature → adjust age accordingly).
Example adjustment workflow:
Compute chronological age in years, months, days using test date and birth date.
Subtract prematurity weeks from age in months/days as needed to obtain adjusted age.
Use adjusted age to determine which items are within the child’s developmental expectations.
Example Calculations (LaTeX formats)
Age calculation (general):
ext{Age}{ ext{years}} = Yt - Yb - egin{cases}1, & ext{if } Mt < Mb ext{ or } (Mt = Mb ext{ and } Dt < Db) \ 0, & ext{otherwise} \ ext{(where } (Yt, Mt, Dt) = ext{test date; } (Yb, Mb, D_b) = ext{birth date)} \
end{cases}Age line: expressed as (years, months, days) on the test form.
If prematurity is considered for a child under 2 years:
(and convert back to years/months/days as needed).Barthel Index total score:
ext{Total Score}{ ext{Barthel}} = igg( igoplus{i=1}^{10} si igg) ext{ with } si ext{ in } ig\{0,5,10,15\ig
brace}
where the sum ranges from 0 to 100.APGAR score:
ext{APGAR} = igl(a1 + p1 + g1 + a2 + r1igr) ext{ with each } ai ext{ in } ig\{0,1,2\ig
brace}
(Total 0–10).
Quick Connections and Implications
ADLs (BADL/IADL) are foundational indicators of functional status and are used for care planning, discharge decisions, and predicting hospital readmission risk, particularly in older adults.
Katz vs Barthel scales offer complementary views: Katz emphasizes basic independence in core self-care tasks, whereas Barthel provides a broader, weighted assessment across more activities, including mobility and continence.
APGAR provides an immediate snapshot of newborn adaptation, guiding early resuscitation and immediate care, with implications for subsequent neonatal management.
MMDST provides a culturally adapted, community-scale screen for developmental milestones, enabling early detection of delays and timely referrals for intervention.
Ethical and practical implications:
Use of screening tools requires clear communication with families about purpose, limitations, and follow-up steps.
Scoring and interpretation should consider context, prematurity, and caregiver input.
Clinicians should balance standardized scores with individual patient goals, cultural factors, and home environments.
Real-World Relevance and Applications
In clinical practice, ADL measures inform disability documentation, rehabilitation planning, home health needs, and long-term care decisions.
APGAR informs neonatal stabilization priorities and subsequent monitoring for potential complications.
MMDST helps pediatric clinicians and public health workers detect early developmental concerns in Filipino children, facilitating early therapies and family education.
Summary of Key Points
ADLs are essential, with BADLs representing basic self-care and IADLs representing complex tasks necessary for independent living.
Measurement tools (Katz, Barthel) quantify functional status and independence, guiding care and resource allocation.
APGAR is a rapid neonatal assessment at 1 and 5 minutes post-birth, scored 0–10, to evaluate immediate adaptation and guide resuscitation needs.
MMDST assesses development across Personal-Social, Fine Motor-Adaptive, Language, and Gross Motor domains; it is a screening, not diagnostic, tool.
Age calculations and prematurity adjustments are crucial for accurate item applicability in MMDST and other pediatric assessments.
Documentation, caregiver communication, and fidelity to manual instructions are essential for valid assessment outcomes.
References to Formulations and Equipment
Katz ADL Scale: 6 items; total score range 0–6; higher = more independence.
Barthel Index: 10 items; total score 0–100; higher = more independence; scoring increments typically 0, 5, 10, 15 per item.
APGAR: 5 signs; total score 0–10; interpretation bands 0–3, 4–6, 7–10.
MMDST: 105 items (not all administered); uses an age line to determine applicable items; items may be passed by report; requires standardized administration.
Time benchmarks: Barthel may take 2–5 minutes by self-report, up to ~20 minutes by direct observation (Finch et al., 2002).
If you’d like, I can tailor these notes into a printable study sheet (condensed version or expanded with practice questions) or convert them into a printable PDF format.