EUROSPINE's measure of choice for neck pain and function evaluation
The Core Outcome Measures Index – neck (COMI-neck) is a validated 6-item tool for neck pain evaluation and surveillance of cervical spine injury. It is part of EUROSPINE’s spine tango, an international registry for patient-reported outcome data collection. The items cover several dimensions: pain intensity, neck-related function, symptom-specific well-being, general quality of life, and social and work disability.
As a neck-specific instrument, the COMI-neck has been used in patients with cervical brachialgia and discogenic neck or shoulder pain due to degenerative disc disease. Moreover, surgical treatments such as cervical total disc replacements can be evaluated using the COMI-neck.
Items - Dimensions - Completion time
In the core COMI-neck, 1 question consists of 2 numerical rating scales to be answered from 0 to 10 and 5 questions to be answered by selecting 1 of 5 response options.
The EUROSPINE version has 5 additional questions on pain quality and patient satisfaction with the treatment and outcome. The additional questions do not influence the COMI-neck score. 3
The 6 items cover 5 dimensions: pain intensity (neck and arm/shoulder pain), neck-related function, symptom-specific well-being, general quality of life and disability (social and work). The patient is asked to answer based on how he or she has felt for the last week , except for the disability dimensions, for which the patient is asked to answer based on how he or she has felt for the last 4 weeks.
There is no information in the literature on completion time. We estimate a time of approximately 5 minutes.
Each dimension receives a subscore. The higher of the 2 pain intensity scores forms the pain intensity dimension subscore. Each response for each of the other 5 questions is scored from 0 to 10:
response 1 (associated with the best possible health status): 0 points
response 2: 2.5 points
response 3: 5 points
response 4: 7.5 points
response 5 (associated with the most health limitations): 10 points
The average of the 2 disability scores forms the disability dimension subscore.
A total COMI score is determined by averaging the 5 dimension scores. There is no information about how to deal with missing data or skipped questions. 1
Question 1: 5 and 4 points respectively (the higher value of 5 is used for scoring)
Question 2: response 4 (7.5 points)
Question 3: response 2 (2.5 points)
Question 4: response 2 (2.5 points)
Question 5: response 1 (0 points)
Question 6: response 4 (7.5 points)
COMI score: (5+7.5+2.5+2.5+((0+7.5)/2))/5 = 4.25
The lower the score, the better the patient’s health.
The lowest possible score of 0 points is associated with no loss of health or function and no pain, whereas the maximum score of 10 points represents the most severe neck pain and loss of function.