Table 3.

Assessment of 6 key domains relevant to reporting clinical outcome in CM-I and the number of papers fulfilling each domain

Study Domain	No. of Papers (%)
Source of outcome evaluation
Clinician impression	67 (90.5)
Patient-response instrument	5 (6.8)
Clinician impression + patient-response instrument	2 (2.7)
Quality of life assessed	22 (29.7)
New symptoms reported	28 (37.8)
Multidimensional assessment performed	38 (51.4)
Revision surgery reported	45 (60.8)
Method of reporting headache symptoms
Not reported or included in general pain scale	19 (25.7)
Described a single “headache” group	14 (18.9)
Combined headache w/ neck or back pain	6 (8.1)
Evaluated headaches by specific location/character	14 (18.9)
Unclear	21 (28.4)