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. Author manuscript; available in PMC: 2015 Aug 1.
Published in final edited form as: J Neurosurg Spine. 2014 May 16;21(2):217–222. doi: 10.3171/2014.4.SPINE13669

TABLE 1.

Clinical data in patients who underwent either arthroplasty or fusion

Parameter Value
age in yrs
 median 43
 range 21–67
no. of patients 260
% female sex 54
level of op (%)
 C3–4 5 (2)
 C4–5 13 (5)
 C5–6 146 (56)
 C6–7 96 (37)
mean ± SD baseline headache score 2.5 ± 1.5
no. of patients w/ baseline headache (%) 228 (88)
no. of patients w/ baseline headache ≥3 (%) 135 (52)
surgical technique (%)
 fusion 81 (31)
 artificial disc 179 (69)
no. of patients w/ 2-yr follow-up data (%) 244 (94)