Table 2.

Comparison of case group and Control group.

		Case group	Control group		p
Affected side
	A (mm)	18.32 ± 2.60	19.07 (16.36–20.14)	0.501△
	P (mm)	17.63 (16.18–20.18)	18.04 (16.13–19.29)	0.817△
	W(mm)	44.61 ± 5.06	45.02 ± 5.01	0.719▲
	AWDI	0.41 ± 4.94	− 0.49 ± 5.46	0.437▲
	AAA (°)	10.59 (8.05–12.46)	9.68 ± 3.76	0.465△
	IWAA (°)	9.16 ± 3.89	9.43 ± 3.82	0.753▲
Contralateral side
	A (mm)	18.55 ± 2.47	18.41 ± 2.77	0.800▲
	P (mm)	17.81 (16.01–19.62)	17.95 (16.08–19.23)	0.840△
	W (mm)	43.36 ± 4.38	45.12 ± 4.92	0.097▲
	AWDI	− 1.12 (− 4.50–2.17)	0.04 ± 6.04	0.795△
	AAA (°)	12.04 (9.02–13.33)	10.43 ± 3.15	0.112△
	IWAA (°)	11.31 ± 4.04	10.22 ± 3.55	0.202▲

“▲” use independent sample t test. “△” uses Mann Whitney U test. Normal data, described by mean ± SD, non-normal data, described by median (P25-P75).