The Neck Disability Index (NDI) is an essential tool for evaluating the extent of a patient's neck-related disability. To effectively use the NDI, scoring must adhere to the criteria outlined below to ensure accurate assessment.
Scoring Method: The NDI is scored out of a total of 50 points. Each of the ten sections on the index is graded from 0 to 5. A score of 0 is assigned if the first statement in a section is marked, whereas a score of 5 is given if the last statement is chosen.
To calculate the percentage score, use the following formula: (obtained score / total possible score) x 100 = percentage score. For example, if the total score accumulated is 16 out of a possible 50, the calculation would be (16/50) x 100 = 32%.
In cases where a section of the NDI is omitted or deemed not applicable, the total possible score decreases accordingly. For instance, if the total score is 16 and one section is not completed, adjust the calculation to (16/45) x 100 = 35.5%.
Minimum Detectable Change: With a 90% confidence level, the minimum detectable change is recognized as either 5 points or 10 percentage points. This threshold indicates a significant change in the patient's condition.
Comments
0 comments
Please sign in to leave a comment.