Table 3.

Clinical features of patients with or without OPLL gene mutations

	Mutation positive (n = 5)	Mutation negative (n = 20)	p
Age	50.8 ± 14.2	52.8 ± 10.5	0.517
Male/female	2/3	8/12	1.000
Thoracic JOA score	6.0 ± 1.9	5.7 ± 2.5	0.316

Data are presented as mean ± SD or n; JOA, Japanese Orthopedic Association