The Modified ODI is a self-administered questionnaire that requires 5 minutes to complete and 1 minute to score. Scores are associated with degree of disability ranging from minimal to bedbound. The ODI is a condition-specific disability scale for patients with LBP, consisting of 10 items addressing different aspects of function, each scored from 0-5 with higher values representing greater disability. This modified ODI has been found to have high levels of reliability, validity, and responsiveness. The MCID for the ODI has been identified at six points .On this scale, 0-20 equates to minimal disability, 20-40 moderate disability, 40-60 severe disability, 60-80 crippled, and 80-100 bed-bound or exaggerating.