Table 2.

Coronal section

	c-NDP (n = 24)			LDD (n = 20)			MDD (n = 6)			Steel–Dwass test
Variables	Mean	SD	Ratio (standard)	Mean	SD	Ratio	Mean	SD	Ratio	c-NDP–LDD	c-NDP–MDD	LDD–MDD
Lateral joint space	1.8	0.4	1.0	2.5	0.3	1.4	1.3	0.4	0.7	c-NDP < LDDb	c-NDP > MDDa	LDD > MDDb
Central joint space	2.7	0.5	1.0	2.2	0.5	0.8	2.0	0.5	0.7	c-NDP > LDDb	c-NDP > MDDa	n.s.
Medial joint space	2.4	0.5	1.0	1.7	0.4	0.7	2.6	0.4	1.1	c-NDP > LDDb	n.s.	LDD < MDDb

c-NDP, coronal normal disc position; LDD, lateral disc displacement; MDD, medial disc displacement; n.s., not significant; SD, standard deviation.

^ap < 0.05.

^bp < 0.01.