Oswestry Disability Index Calculator
Validated 10-Item Back Pain Disability Instrument (ODI)
Daily Living Assessment
10 questions measuring functional disability
Score Overview
Raw Total0
Questions Answered10 / 10
Disability Index0%
Max Raw Score50
Max Disability100%
Guidelines & Evidence
Verified
Last Review: 2026-07-17
When to Use
When to Use
Initial assessment of functional disability in patients with acute or chronic low back pain
Monitoring response to treatment: physical therapy, medication, injections, or surgery
Outcome measurement following spinal surgery (fusion, decompression, disc replacement)
Occupational health evaluation for work-related back pain disability
Clinical trials evaluating interventions for low back pain and spinal disorders
Serial tracking of disability over time in chronic back pain management
Patient Population
Designed for adults with mechanical low back pain, with or without radiculopathy. Validated in primary care, orthopedic, neurosurgical, and rehabilitation settings. The most widely used condition-specific outcome measure for spinal disorders worldwide.
How it Works
Formula
Raw Score = Sum of 10 item scores (each 0-5) = 0 to 50
Disability Percentage = (Raw Score / 50) × 100%
Each section has 6 statements scored 0 (least disability) to 5 (most disability)
Higher percentages indicate greater functional disability
Sections Assessed
| Section | Focus | Score Range |
|---|---|---|
| 1 | Pain Intensity | 0-5 |
| 2 | Personal Care | 0-5 |
| 3 | Lifting | 0-5 |
| 4 | Walking | 0-5 |
| 5 | Sitting | 0-5 |
| 6 | Standing | 0-5 |
| 7 | Sleeping | 0-5 |
| 8 | Sex Life | 0-5 |
| 9 | Social Life | 0-5 |
| 10 | Traveling | 0-5 |
Clinical Pearls
Interpretation Guide
| Disability % | Classification | Clinical Implication |
|---|---|---|
| 0 – 20% | Minimal Disability | Can manage most activities; no formal treatment needed |
| 21 – 40% | Moderate Disability | Difficulty with sitting/lifting; conservative management |
| 41 – 60% | Severe Disability | Major impact on daily life; consider specialist referral |
| 61 – 80% | Crippling Disability | Housebound; surgical evaluation warranted |
| 81 – 100% | Bed-Bound | Severely limited; urgent multidisciplinary assessment |
Key Considerations
The ODI is the gold standard for back pain-related disability measurement
Section 8 (Sex Life) is frequently omitted in some clinical settings — document if adapted
MCID: 10-15 percentage points depending on population and intervention
The ODI and Roland-Morris Disability Questionnaire are complementary tools
A score > 40% suggests poor surgical candidacy in some spinal fusion algorithms
Common Pitfalls
If more than 2 sections are missed by the patient, the questionnaire is invalid
Section 8 (Sex Life) may be omitted by up to 20% of patients — document if excluded
Do not use the ODI for patients with primarily leg pain rather than back pain
Ensure patients select only ONE statement per section (the one most applicable)
Next Steps
Clinical Actions
01
Calculate disability percentage and classify severity using interpretation guide
02
For minimal-moderate disability (0-40%): initiate conservative care (PT, NSAIDs, activity modification)
03
For severe disability (41-60%): consider specialist referral and advanced imaging
04
For crippling disability (>60%): multidisciplinary pain management; surgical consultation
05
Track ODI at each follow-up visit to assess treatment response objectively
06
A deterioration of ≥ 10 percentage points warrants clinical reassessment
The Evidence
Primary Reference
The Oswestry low back pain disability questionnaire
Fairbank JCT et al. • Physiotherapy. 1980;66(8):271-273 — Original development of the Oswestry Disability Index
Psychometric Properties
Test-retest reliability: r = 0.83-0.99
Internal consistency: Cronbach's alpha 0.85-0.90
MCID: 10-15 percentage points (varies by population)
Responsiveness: Large effect size for surgical interventions
Correlation with SF-36 physical function: r = -0.60 to -0.75
Origins & History
Historical Background
The Oswestry Disability Index was developed by Jeremy Fairbank and colleagues at the Nuffield Orthopaedic Centre, Oxford, UK. First published in 1980, it has become the most widely used condition-specific outcome measure for low back pain worldwide, translated into over 30 languages.
Last Comprehensive Review: 2026-07-17