One-way ANOVA for T2 intensity among age groups at each anatomical disc level.

T2 intensity in different anatomical levels of every age group were showed as means±standard deviations (ms); T21, T22, T23, T24, T25 indicate the T2 intensity from L1–2 to L5-S1 IVD respectively; *Brown-Forsythe test was used for ANOVA; #P>0.05;