Back Disability Index Calculator

Oswestry Disability Index Formula:

\[ \text{Index %} = \frac{\text{Sum Scores}}{\text{Max Score}} \times 100 \]

Index Percentage:

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1. What is the Back Disability Index?

The Oswestry Disability Index (ODI) is a widely used questionnaire that measures the degree of functional disability in patients with low back pain. It assesses how back pain affects various aspects of daily living.

2. How Does the Calculator Work?

The calculator uses the Oswestry Disability Index formula:

\[ \text{Index %} = \frac{\text{Sum Scores}}{\text{Max Score}} \times 100 \]

Where:

\( \text{Sum Scores} \) — Total points from all questionnaire sections (0-50 points)
\( \text{Max Score} \) — Maximum possible score (typically 50 points)
\( \text{Index %} \) — Final disability percentage (0-100%)

Explanation: The formula converts the raw score into a percentage that represents the level of disability, with higher percentages indicating greater disability.

3. Importance of Disability Assessment

Details: The ODI helps clinicians quantify functional limitations, track treatment progress, and make informed decisions about rehabilitation and return-to-work planning for patients with back pain.

4. Using the Calculator

Tips: Enter the sum of scores from all ODI sections (0-50 points) and the maximum score (typically 50). Ensure the sum score does not exceed the maximum score.

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 many sections are in the ODI questionnaire?
A: The ODI consists of 10 sections covering pain intensity, personal care, lifting, walking, sitting, standing, sleeping, sex life, social life, and traveling.

Q3: What is the typical maximum score?
A: The standard maximum score is 50 points, with each of the 10 sections contributing 0-5 points.

Q4: How often should the ODI be administered?
A: Typically administered at initial assessment and then periodically (e.g., every 4-6 weeks) to monitor treatment progress.

Q5: Are there validated versions for different languages?
A: Yes, the ODI has been translated and validated in numerous languages worldwide, maintaining good reliability and validity across cultures.