Oswestry Disability Index Scoring Calculator

ODI Formula:

\[ ODI = \frac{Total\ Score}{50} \times 100 \]

ODI (%):

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1. What is the Oswestry Disability Index?

The Oswestry Disability Index (ODI) is a widely used questionnaire that measures the degree of disability and impairment in patients with low back pain. It assesses how back pain affects the ability to manage everyday life.

2. How Does the Calculator Work?

The calculator uses the ODI formula:

\[ ODI = \frac{Total\ Score}{50} \times 100 \]

Where:

\( Total\ Score \) — Sum of scores from all 10 sections (0-5 points each)
\( 50 \) — Maximum possible score
\( 100 \) — Conversion to percentage

Explanation: The ODI questionnaire consists of 10 items, each scored from 0 to 5. The total score is converted to a percentage that represents the level of disability.

3. Importance of ODI Calculation

Details: The ODI is crucial for assessing functional disability in patients with low back pain, monitoring treatment progress, and determining the impact of back pain on daily activities and quality of life.

4. Using the Calculator

Tips: Enter the total score from the ODI questionnaire (sum of all 10 sections). The score must be between 0 and 50 points. The calculator will automatically compute the ODI percentage.

5. Frequently Asked Questions (FAQ)

Q1: What do the ODI percentage ranges mean?
A: 0-20% minimal disability, 21-40% moderate disability, 41-60% severe disability, 61-80% crippled, 81-100% bed-bound or exaggerating symptoms.

Q2: How is the ODI questionnaire structured?
A: It consists of 10 sections: pain intensity, personal care, lifting, walking, sitting, standing, sleeping, sex life, social life, and traveling.

Q3: When should the ODI be used?
A: For patients with low back pain to assess baseline disability, monitor treatment effectiveness, and evaluate functional outcomes over time.

Q4: Are there limitations to the ODI?
A: It may be less sensitive to small changes in disability and can be influenced by patient's subjective interpretation of questions.

Q5: What is considered a clinically significant change in ODI?
A: A change of 10-15 percentage points is generally considered clinically significant and meaningful for patients.