MDI Myelopathy Disability Index
Each of the 10 items can be scored as:
Total score is the sum of all items (range 0-30). The final score is expessed as a percentage.
Casey AT, Bland JM, Crockard HA. Development of a functional scoring system for rheumatoid arthritis patients with cervical myelopathy. Ann. Rheum. Dis. 1996 Dec.;55(12):901-906.