The Barthel Index Calculator scores functional independence in ten activities of daily living from feeding through stair climbing. A validated functional assessment used in rehabilitation medicine and geriatric care to quantify disability level and track recovery after stroke, surgery, or illness.
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Can this patient be safely discharged home? What level of nursing home care do they require? How much has function improved since rehabilitation began? The Barthel Index answers these questions with a standardized, reproducible score that has been the workhorse of functional assessment in rehabilitation medicine since Mahoney and Barthel published it in 1965. The calculator for the Barthel Index scores all ten ADL domains and provides the composite functional independence score with clinical interpretation.
Total score ranges from 0 (completely dependent) to 100 (fully independent). Each domain scores either 0, 5, 10, or 15 depending on the level of independence:
Use this online calculator to score any patient. The Katz Index calculator provides an alternative ADL assessment with a different scoring structure.
The Barthel Index score maps to functional independence categories with clinical and discharge planning implications:
The Barthel Index shows excellent sensitivity to change during rehabilitation (particularly in stroke and orthopedic recovery) and has strong inter-rater reliability (kappa 0.93–0.97) when trained raters apply the standardized scoring criteria. Its limitations are well-characterized:
The Karnofsky performance status calculator and quality of life calculators provide complementary functional assessment tools.
The Barthel Index is the most widely used outcome measure in stroke clinical trials, appearing as the primary endpoint in landmark studies including IST-3, ECASS III, and MR CLEAN. The modified Rankin Scale (mRS) is increasingly used alongside BI in stroke research because it captures broader social function. A Barthel score above 60 at 3 months post-stroke predicts favorable long-term outcome in most registry studies; the 3-month BI is a stronger predictor of 1-year outcome than any acute-phase clinical measure including NIHSS. This predictive validity over time is what makes the Barthel Index, despite being first published in 1965, still the gold standard outcome measure in rehabilitation research over 50 years later.
The Barthel Index scores 10 ADL items with varying point values:
Total: 0-100. Dependency: 1=Independent (80-100), 2=Mild (60-79), 3=Moderate (40-59), 4=Severe (20-39), 5=Total (0-19). Discharge safe: 1=Yes (>=60), 0=No.
A Barthel score of 80-100 indicates independence or near-independence in basic ADLs. A score of 60-79 indicates mild dependency — typically safe for home discharge with some support. A score of 40-59 indicates moderate dependency requiring significant caregiver assistance. Scores below 40 indicate severe to total dependency typically requiring institutional care. Discharge Safe: 1 means likely safe for home, 0 means additional support needed.
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Barthel 90/100: Nearly independent, minor assistance needed for stairs. Safe for home discharge.
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Barthel 25/100: Severe dependency. Requires extensive assistance. Not safe for home discharge without 24-hour care.
The Barthel Index is a validated scale that measures a person's performance in 10 activities of daily living (ADLs). Total scores range from 0 (totally dependent) to 100 (fully independent). It is the most widely used ADL assessment in rehabilitation.
A Barthel score of 60 or above is generally considered the minimum threshold for safe home discharge, assuming some family or caregiver support is available. Scores above 80 typically indicate independent living ability.
In acute rehabilitation, Barthel is typically assessed at admission, weekly during stay, at discharge, and at follow-up visits. In long-term care, monthly or quarterly assessment is common.
Patients can score 100 (fully independent) on the Barthel Index while still having limitations in more complex activities like cooking, managing finances, or using public transportation. This is the ceiling effect.
The Barthel Index scores 10 items on a weighted scale (0-100) with multiple dependency levels per item. The Katz Index scores 6 items (bathing, dressing, toileting, transferring, continence, feeding) dichotomously. Barthel is more sensitive to change.
While traditionally administered by a clinician or therapist, self-reported versions have been validated. However, self-reported scores tend to be slightly higher than clinician-assessed scores.
Yes, the Barthel Index is the most commonly used outcome measure in stroke trials and rehabilitation. It has been extensively validated in stroke populations for reliability, validity, and responsiveness to change.
A change of approximately 10-20 points on the Barthel Index is generally considered clinically meaningful, though this depends on the patient population and baseline score.
Transfers and mobility are scored up to 15 points (vs 5-10 for other items) because they are considered more complex activities that are critical for independent living and safety.
Studies show that patients with Barthel scores below 40 at hospital discharge have a high probability of requiring nursing home placement. Scores above 60 are associated with successful community living.
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