Table 6

Correlation between DH and SL with changes in CD and CCA.

Variable	Pre-ADH	Pre-PDH	Pre-AvDH	Pre-SL
ΔCD
r	−0.091	−0.078	−0.108	0.082
P	0.432	0.501	0.349	0.478
ΔCCA
r	−0.118	−0.106	−0.134	0.033
P	0.306	0.357	0.244	0.777

Variable	Post-ADH	Post-PDH	Post-AvDH	Post-SL
ΔCD
r	−0.076	0.080	−0.012	−0.117
P	0.512	0.487	0.915	0.311
ΔCCA
r	0.017	0.126	0.066	0.005
P	0.884	0.275	0.569	0.966

Variable	ΔADH	ΔPDH	ΔAvDH	ΔSL
ΔCD
r	0.013	0.195	0.095	−0.122
P	0.909	0.089	0.411	0.291
ΔCCA
r	0.120	0.272^{^a}	0.199	−0.010
P	0.298	0.017	0.083	0.928

Abbreviations: ADH, anterior disc height; AvDH, average disc height; PDH, posterior disc height; SL, segmental lordosis; ΔCCA, change of central canal area; ΔCD, change of canal diameter.
↵a Statistically significant.