Relationship between Cervical Spine and Skeletal Class II in Subjects with and without Temporomandibular Disorders

Table 6

Pearson’s and Spearman’s correlation analysis between C0-C1 distance and ANB scores.

TMD	Pearson’s correlation index	Student’s t test ()	Spearman’s correlation index	Student’s t test ()
Absent (N = 33)	0.147 (L)	0.830 (NS)	0.158 (L)	0.890 (NS)
Present (N = 26)	0.113 (L)	0.5 (NS)	0.152 (L)	NS according to critical values table for the nonparametric test

L: low correlation; NS: nonsignificant. Student’s t test is used for the evaluation of significance, with a value <0.005.