ODI Calculator
Score the Oswestry Disability Index below, free, no account. In a real chart, the same block scores it automatically at every visit and charts the trend for you.
Oswestry Disability Index
What the ODI measures
The Oswestry Disability Index (ODI) is a 10-section questionnaire for disability from low back pain. First published by Fairbank and colleagues in 1980, it is one of the two most widely used low back pain measures, alongside the Roland-Morris questionnaire.
Scores are expressed as a percentage, and higher means more disability.
How to score the ODI
- Each of the 10 sections (pain intensity, personal care, lifting, walking, sitting, standing, sleeping, sex life, social life, travelling) is scored 0 to 5.
- Add the section scores for a raw total out of 50.
- Divide by 50 and multiply by 100 (equivalently, multiply by 2) to get percent disability.
If a section is skipped, divide by 5 × the number of sections answered instead of 50. Many patients leave the sex-life section blank, so this adjustment is common.
ODI severity bands
The standard interpretation categories (Fairbank and Pynsent, 2000):
| ODI % | Interpretation |
|---|---|
| 0–20% | Minimal disability |
| 21–40% | Moderate disability |
| 41–60% | Severe disability |
| 61–80% | Crippled |
| 81–100% | Bed-bound, or symptoms may be exaggerated |
The band labels are the published ones. In a patient-facing report you may want to describe the range rather than use the label itself.
What counts as a meaningful change
An international consensus (Ostelo et al., 2008) recommended 10 percentage points, or a 30% improvement from baseline, as the minimal important change for the ODI. The calculator above uses the 10-point figure.
For patients who start with a low score, the 30% relative change is often the more realistic target.
Using the ODI in your clinic
The ODI is standard at intake and discharge for low back pain in physiotherapy and chiropractic practice, and it is often requested in WSIB and auto-insurance progress reports. In Zdrovia, the score is saved to the chart at each visit and graphed automatically. See how that works for physiotherapy clinics.
Frequently asked questions
How do you calculate the Oswestry Disability Index?
Score each of the 10 sections from 0 to 5, add them, then divide by 50 and multiply by 100. If a section is left blank, divide by 5 × the number of sections answered instead.
What is a normal Oswestry score?
0–20% is classed as minimal disability. People without back pain usually score in the single digits.
What is the MCID for the ODI?
The commonly used threshold is 10 percentage points, or a 30% improvement from the patient's baseline, based on the Ostelo et al. (2008) consensus.
What is the difference between the Oswestry and the Neck Disability Index?
The NDI was adapted from the Oswestry for neck pain. Both use ten 0–5 sections and a percentage score, but the sections and the severity bands differ.
Is the Oswestry Disability Index free to use?
The ODI is copyrighted. Clinical use is widely permitted, but check the licensing terms before reproducing it in publications or commercial software.
Sources
- Fairbank JC, Pynsent PB. The Oswestry Disability Index. Spine. 2000;25(22):2940–2952
- Ostelo RW et al. Interpreting change scores for pain and functional status in low back pain. Spine. 2008;33(1):90–94
This page is a reference for clinicians, not medical advice. Scoring conventions and change thresholds vary between studies; follow your profession's guidance and the instrument's official user manual.
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The patient answers, or you do it with them. The total and severity band compute live, the same way PHQ-9 and GAD-7 already do in Zdrovia today.
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The score you enter is the graph you get
Because a scored questionnaire is a structured field and not a paragraph in a note, every visit's total lands on the same trend line the moment it's saved, the same mechanism already charting PHQ-9 and GAD-7 in the live product.
- Reference lines for clinically meaningful change, not just raw movement
- Compare against intake automatically, no manual lookup
- Exportable for a referral or an insurer's progress report
- Works the same for any scale your clinic defines
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Any validated instrument
ODI is the same shape of problem PHQ-9 and GAD-7 already solve in the live product: fixed items, a running total, a severity band.
Item-level flags, not just a total
A single alarming answer can surface immediately instead of getting averaged away into the total score.
Trend graphs for free
Because the score is a structured field and not a paragraph of prose, it's chartable the moment it's saved.
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