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Table. 1.

Descriptive analysis of the sample size and age

Variable Group 1(n = 19) Group 2(n = 25) Group 3(n = 13) Group 4(n = 49) Group 5(n = 34) p-value
Age (yr) 25.7 ± 9.4 28.9 ± 10.8 23.6 ± 5.3 24.0 ± 4.9 23.8 ± 4.8 0.3

Values are presented as mean ± standard deviation.

Group 1, patients with bilateral normal disk positions; Group 2, patients with bilateral anterior disk displacement with reduction; Group 3, patients with bilateral rotational disk displacement with reduction; Group 4, patients with bilateral anterior disk displacement without reduction; Group 5, patients with bilateral rotational disk displacement without reduction.

The p-value was analyzed using the Kruskal–Wallis test at a significance level of p < 0.05.

Korean J Orthod 2021;51:105~114 https://doi.org/10.4041/kjod.2021.51.2.105
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