Oswestry Disability Index (ODI) Calculator

questionnaire

Section 1: Pain intensity

Section 2: Personal care (washing, dressing)

Section 3: Lifting

Section 4: Walking

Section 5: Sitting

Section 6: Standing

Section 7: Sleeping

Section 8: Social life

Section 9: Travelling

Section 10: Employment/homemaking (or sex life in v2.1a)

✓ when to use

Use for all patients with low back pain to quantify functional disability, track treatment response, and inform surgical vs conservative management decisions. The ODI is the gold standard outcome measure in spine surgery trials and the most commonly used back pain PROM in clinical practice.

✗ when not to use

The ODI is specific to low back pain — not appropriate for cervical spine conditions (use the Neck Disability Index) or general musculoskeletal conditions. Multiple versions exist (1.0, 2.0, 2.1a) with slight differences in section 8 (sex life vs social life). Ensure consistent version use for longitudinal comparisons.

clinical pearls

Score calculation: (sum of all section scores / 50) × 100 = percentage disability. If a section is unanswered, divide by the maximum possible for answered sections (e.g., if 9 sections answered: sum / 45 × 100).
The MCID for ODI is approximately 10–12 points. When monitoring treatment response, a change of ≥10 points represents meaningful clinical improvement. Smaller changes may be statistically significant but not clinically perceptible to the patient.
ODI is the primary outcome in most spine surgery RCTs. Pre-operative ODI helps set expectations — patients with ODI >40 tend to improve more in absolute terms after surgery, but may not reach low disability levels.
Version matters: ODI 2.1a replaced section 8 (sex life) with section 8 (social life) and changed some response options. When comparing scores longitudinally or between studies, ensure the same version was used.
The ODI captures disability, not pain alone. A patient with high pain but good function (e.g., continues to work, socialise, sleep) will score lower than a patient with moderate pain but severe functional limitation. This distinction is clinically important.

✓ when to use

✗ when not to use

clinical pearls

Score calculation: (sum of all section scores / 50) × 100 = percentage disability. If a section is unanswered, divide by the maximum possible for answered sections (e.g., if 9 sections answered: sum / 45 × 100).
The MCID for ODI is approximately 10–12 points. When monitoring treatment response, a change of ≥10 points represents meaningful clinical improvement. Smaller changes may be statistically significant but not clinically perceptible to the patient.
ODI is the primary outcome in most spine surgery RCTs. Pre-operative ODI helps set expectations — patients with ODI >40 tend to improve more in absolute terms after surgery, but may not reach low disability levels.
Version matters: ODI 2.1a replaced section 8 (sex life) with section 8 (social life) and changed some response options. When comparing scores longitudinally or between studies, ensure the same version was used.
The ODI captures disability, not pain alone. A patient with high pain but good function (e.g., continues to work, socialise, sleep) will score lower than a patient with moderate pain but severe functional limitation. This distinction is clinically important.

Oswestry Disability Index (ODI)

questionnaire

✓ when to use

✗ when not to use

clinical pearls

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