Oswestry Low Back Pain Disability Questionnaire

Abstract

The Oswestry Low Back Pain Disability Questionnaire (ODI), frequently referred to as the Oswestry Disability Index, is a highly respected and condition-specific outcome measure used extensively in orthopedic and physical medicine. Developed in 1980, this self-administered tool is designed to quantify the degree of functional disability experienced by patients due to low back pain (LBP).

The instrument consists of ten sections, each relating to a specific daily activity or function, and provides a total percentage score ranging from 0% (no disability) to 100% (maximal disability). The ODI is considered a vital metric for monitoring patient progress, evaluating the effectiveness of both conservative and surgical treatments, and establishing the overall severity of LBP-related functional limitations.

Keywords

Oswestry Disability Index, ODI, Low Back Pain, Functional Disability, Back Pain Assessment, Pain Intensity, Self-Report Questionnaire, Physical Therapy, Rehabilitation.

Authors

J.C.T. Fairbank, J. Couper, J.B. Davies, J.P. O’Brien.

Purpose

The primary purpose of the Oswestry Low Back Pain Disability Questionnaire is to provide a standardized, reliable, and sensitive measure of a patient’s self-perception of their functional limitations caused by low back pain. Unlike scales that focus solely on pain intensity, the ODI captures the multi-dimensional impact of LBP on a patient’s ability to engage in daily and social activities, thereby serving as a robust measure of quality of life impairment.

It is widely utilized by clinicians, including orthopedic surgeons and physiotherapy professionals, to establish a quantifiable baseline of disability before treatment commences. Subsequent administrations of the questionnaire allow healthcare providers to track changes in functional status over time, aiding in treatment planning and outcome reporting.

Construct

The core construct measured by the ODI is functional disability secondary to low back pain. This construct encompasses the limitation of participation in normal daily activities due to LBP, covering both static activities (sitting, standing) and dynamic activities (lifting, walking, traveling), as well as personal and social engagement (personal care, sleeping, social life, and sex life).

The scale assumes that disability is not just a measure of pain but the resulting restriction of life roles. By dividing the assessment into ten distinct, activity-based domains, the ODI provides a comprehensive profile of how LBP translates into real-world functional impairment, which is essential for guiding rehabilitation efforts.

Validity

The Oswestry Low Back Pain Disability Questionnaire demonstrates strong evidence of validity, confirming its clinical utility. Its content validity is supported by the fact that the ten sections cover the most critical functional areas commonly restricted by spinal pathologies. Criterion validity has been established through strong correlations with other validated disability measures, such as the Roland-Morris Disability Questionnaire, confirming that the ODI measures what it intends to measure.

Furthermore, the instrument exhibits good construct validity, showing expected correlations with measures of general health status and patient-reported pain levels. Crucially for an outcome measure, the ODI possesses high responsiveness, meaning it is sensitive enough to detect clinically meaningful changes in a patient’s functional status following intervention, a key requirement for efficacy trials and clinical monitoring.

Reliability

The ODI is recognized for its excellent psychometric properties, especially concerning reliability. Studies have consistently reported high test-retest reliability, indicating that the scores remain stable and consistent when the patient’s condition has not changed between administrations. This repeatability ensures that any observed score variance is likely due to genuine clinical change rather than measurement error.

The scale also exhibits high internal consistency, typically reported through Cronbach’s alpha values exceeding 0.80, suggesting that the ten items are highly correlated and reliably measure the same underlying construct of disability. Studies, such as those by Baker et al. (1989), have specifically confirmed the reliability and repeatability of the index, solidifying its status as a trusted clinical tool.

Factor Analysis

While the Oswestry Disability Index is primarily designed and scored as a unidimensional instrument yielding a single total disability score, factor analytic research has occasionally explored its underlying structure. Some analyses support a structure consisting of two primary factors: one related to pain intensity and the second encompassing items related to physical function and mobility (e.g., walking, lifting, sitting).

Despite these findings regarding potential sub-factors, the standard clinical practice continues to rely on the total score calculation. Researchers generally agree that the total score accurately reflects the global impact of LBP on disability, making it the most clinically relevant metric for comparative studies and outcome assessment.

Instrument

Test Type: Self-Report Outcome Measure/Condition-Specific Disability Questionnaire

Format: 10 sections, each with 6 statements scored 0 to 5 points. The total score is converted to a percentage (0% to 100%).

Language Available: English (Original), widely translated and validated in numerous international languages.

Population Group: Patients presenting with acute, subacute, or chronic low back pain.

Age Group: Typically adults (18 years and older).

Population Details: Used across various clinical settings including orthopedic rehabilitation, physiotherapy, chiropractic care, and pain clinics to monitor functional status.

Test Methodology: Self-administered. The respondent chooses one statement per section that best describes their condition. The scores (0 to 5) are summed, divided by the maximum possible score (50), and multiplied by 100 to yield the final disability percentage score.

Keywords

Oswestry Disability Index, ODI, Functional Disability, Outcome Measure, Spine, Orthopedics, Pain Management, Psychometric Properties.

Authors

Author ORCID Identifier: Not available in source content.

Affiliation Email addresses: Not available in source content.

Correspondence Address: Not available in source content.

Permissions & Fee and Test Year

The original version of the Oswestry Low Back Pain Disability Questionnaire was published in 1980. The scale is widely used globally and is generally considered to be in the public domain for standard clinical and non-commercial research applications, given its age and ubiquitous adoption.

However, users seeking to utilize specific modified versions (e.g., Modified Oswestry Low Back Pain Disability Questionnaire) or certain copyrighted translations are advised to consult the original authors or the Oswestry Spinal Unit to ensure compliance regarding permissions and potential fees.

Reference’s

• Baker, D.J., Pynsent, P.B., Fairbank, J.C.T. (1989). The Oswestry Disability Index revisited: its reliability, repeatability and validity, and a comparison with the St. Thomas’s Disability Index. In: Roland MO, Jenner JR, eds. Back pain: new approaches to rehabilitation and education. Manchester: Manchester University Press, 174–186.
• Fairbank, J.C.T., Couper, J., Davies, J.B, O’Brien, J.P. (1980). The Oswestry Low Back Pain Disability Questionnaire. Physiotherapy, 66(8):271–273.
• Fairbank, J.C.T., Pynsent, P.B. (2000). The Oswestry Disability Index. Spine, 25(22):2940-2953.
• Fritz, J.M., Irrgang, J.J. (2001). A comparison of a modified Oswestry Low Back Pain Disability Questionnaire and the Quebec Back Pain Disability Scale. Phys Ther, 81:776–788.
• McDowell, Ian. (2006). Measuring Health: A Guide to Rating Scales and Questionnaires, Third Edition. OXFORD UNIVERSITY PRESS.
• Torenbeek, M., Caulfield, B., Garrett, M., et al. (2001). Current use of outcome measures for stroke and low back pain rehabilitation in five European countries: first results of the ACROSS project. Int J Rehabil Res, 24:95–101.

The original PDF instrument documentation can be accessed via the following sources:

• www.a4ebm.org/sites/default/files/Measuring%20Health.pdf
• http://www.rehab.msu.edu/_files/_docs/Oswestry_Low_Back_Disability.pdf
• http://www1.udel.edu/PT/manal/Annual07/oswestryGrading.pdf

Items of the Oswestry Low Back Pain Disability Questionnaire

The questionnaire consists of 10 sections, each containing six statements corresponding to degrees of increasing disability (scored 0 to 5). The interpretation of the final percentage score is:

• 0 to 20: Minimal disability
• 21–40: Moderate Disability
• 41–60: Severe Disability
• 61–80: Crippling back pain
• 81–100: These patients are either bed-bound or have an exaggeration of their symptoms.

Section 1—Pain Intensity

• I have no pain at the moment.
• The pain is very mild at the moment.
• The pain is moderate at the moment.
• The pain is fairly severe at the moment.
• The pain is very severe at the moment.
• The pain is the worst imaginable at the moment.

Section 2—Personal Care (washing, dressing, etc.)

• I can look after myself normally without causing extra pain.
• I can look after myself normally but it is very painful.
• It is painful to look after myself and I am slow and careful.
• I need some help but manage most of my personal care.
• I need help every day in most aspects of self care.
• I do not get dressed, wash with difficulty and stay in bed.

Section 3—Lifting

• I can lift heavy weights without extra pain.
• I can lift heavy weights but it gives extra pain.
• Pain prevents me from lifting heavy weights off the floor but I can manage if they are conveniently positioned, e.g. on a table.
• Pain prevents me from lifting heavy weights but I can manage light to medium weights if they are conveniently positioned.
• I can lift only very light weights.
• I cannot lift or carry anything at all.

Section 4—Walking

• Pain does not prevent me walking any distance.
• Pain prevents me walking more than 1 mile.
• Pain prevents me walking more than 1/4 mile.
• Pain prevents me walking more than 100 yards.
• I can only walk using a stick or crutches.
• I am in bed most of the time and have to crawl to the toilet.

Section 5—Sitting

• I can sit in any chair as long as I like.
• I can sit in my favorite chair as long as I like.
• Pain prevents me from sitting for more than 1 hour.
• Pain prevents me from sitting for more than 1/2 hour.
• Pain prevents me from sitting for more than 10 minutes.
• Pain prevents me from sitting at all.

Section 6—Standing

• I can stand as long as I want without extra pain.
• I can stand as long as I want but it gives me extra pain.
• Pain prevents me from standing for more than 1 hour.
• Pain prevents me from standing for more than 1/2 hour.
• Pain prevents me from standing for more than 10 minutes.
• Pain prevents me from standing at all.

Section 7—Sleeping

• My sleep is never disturbed by pain.
• My sleep is occasionally disturbed by pain.
• Because of pain I have less than 6 hours sleep.
• Because of pain I have less than 4 hours sleep.
• Because of pain I have less than 2 hours sleep.
• Pain prevents me from sleeping at all.

Section 8—Sex Life (if applicable)

• My sex life is normal and causes no extra pain.
• My sex life is normal but causes some extra pain.
• My sex life is nearly normal but is very painful.
• My sex life is severely restricted by pain.
• My sex life is nearly absent because of pain.
• Pain prevents any sex life at all.

Section 9—Social Life

• My social life is normal and causes me no extra pain.
• My social life is normal but increases the degree of pain.
• Pain has no significant effect on my social life apart from limiting my more energetic interests, e.g. sport, etc.
• Pain has restricted my social life and I do not go out as often.
• Pain has restricted social life to my home.
• I have no social life because of pain.

Section 10—Traveling

• I can travel anywhere without pain.
• I can travel anywhere but it gives extra pain.
• Pain is bad but I manage journeys over two hours.
• Pain restricts me to journeys of less than one hour.
• Pain restricts me to short necessary journeys under 30 minutes.
• Pain prevents me from traveling except to receive treatment.