Daily living
Barthel Index
The Barthel Index is a ten-item scale of independence in daily activities, scored from 0 to 100 in five-point increments. It is quick, needs no training and no licence, which is why it remains one of the most widely used measures in stroke rehabilitation worldwide.
What it measures
Ten basic activities of daily living, each scored in steps of 5 or 10 points depending on the item. It answers a single question: how much help does this person need to get through an ordinary day?
Why it is still used after sixty years
It is free, needs no training, takes under ten minutes and is understood in every rehabilitation unit in the world. That combination makes it the most comparable measure available — a Barthel score recorded in İstanbul means the same thing as one recorded in Düsseldorf.
Its weakness is the ceiling. Once someone is largely independent it stops detecting improvement, which is why we pair it with a walking or balance measure rather than using it alone.
Key facts
| Abbreviation | BI |
|---|---|
| Number of items | 10 |
| Score range | 0–100 (higher = more independent) |
| Time to administer | 5–10 minutes |
| Training required | No formal training required |
| Cost | Free |
| Equipment | None |
| Domains | Feeding · Bathing · Grooming · Dressing · Bowel and bladder control · Toilet use · Transfers · Mobility · Stairs |
| ICF domain | Activity |
| Age range | Adult and older adult |
| Populations | Stroke · Older adults · Neurological conditions · Orthopaedic |
| Languages | Widely translated and freely available |
Psychometrics by population
The same instrument behaves differently in different conditions. A cut-off established in older adults does not transfer to Parkinson's disease, and a minimal detectable change from one study does not apply to another population.
| Population | Cut-off | MDC / MCID | Reliability | Validity |
|---|---|---|---|---|
| StrokeCut-off values vary between studies and health systems | Admission score above 40 associated with more discharges home; 60 marks the move from dependence to assisted independence (Granger 1979) | — | Good to excellent inter-rater and test–retest reliability | — |
| Older adultsMarked ceiling effect in community-dwelling older adults; less useful for detecting small gains | — | — | — | — |
Things to be careful about
- Strong ceiling effect — insensitive to change once a patient is largely independent
- Five-point increments make it less granular than the FIM
- Does not assess cognition or communication at all
Frequently asked questions
What does a Barthel Index score mean?
The scale runs from 0 to 100 in five-point steps, where higher means more independent in daily activities. In a classic stroke rehabilitation study, patients admitted with scores above 40 were more often discharged home, and 60 marked the point at which patients moved from dependence to assisted independence 3. These thresholds vary between studies and health systems, and no single number decides where a person goes.
What is the difference between the Barthel Index and the FIM?
The Barthel is free, needs no training and takes under ten minutes; the FIM is licensed, needs a credentialed assessor and takes 30 to 45. In exchange the FIM is more granular — seven levels per item against the Barthel’s five-point increments — and it assesses cognition and communication, which the Barthel does not touch at all.
Why has my score stopped improving even though I feel better?
This is the ceiling effect and it is the scale’s main weakness. Once someone is largely independent the Barthel stops detecting improvement, because every remaining item is already scored at the top. It is why we pair it with a walking or balance measure rather than using it alone.
Why is a sixty-year-old scale still used?
Because it is free, needs no training and is understood in every rehabilitation unit in the world. That combination makes it the most comparable measure available — a Barthel score recorded in İstanbul means the same thing as one recorded in Düsseldorf, which matters when your records travel with you.
Sources
- Mahoney FI, Barthel DW. Functional evaluation: the Barthel Index — Maryland State Medical Journal (1965)
- Quinn TJ, Langhorne P, Stott DJ. Barthel Index for stroke trials: development, properties, and application — Stroke (2011)
- Granger CV, Dewis LS, Peters NC, Sherwood CC, Barrett JE. Stroke rehabilitation: analysis of repeated Barthel index measures — Archives of Physical Medicine and Rehabilitation (1979)
Topic
Related instruments
- Rehabilitation outcomeFunctional Independence Measure (FIM)The FIM is an 18-item scale scoring how much assistance a person needs across thirteen motor and five cognitive tasks.
- Balance and fallsBerg Balance ScaleThe Berg Balance Scale assesses static and dynamic balance through fourteen everyday tasks, each scored 0 to 4, giving a total out of 56.
- EnduranceSix-minute walk testThe six-minute walk test records the distance a person can walk in six minutes on a flat, measured course.
