Table 8.

Analysis of measurements of Distance C.

Distance (mm)
Group	Minimum	1st quartile	Median	Average	3rd quartile	Maximum	Standard deviation	P value∗
All	8.50	11.07	12.31	12.31	13.51	16.26	1.66
Female	8.50	10.98	12.02	11.98	13.10	16.26	1.58	0.0001
Male	10.08	11.95	13.26	13.13	14.28	16.25	1.57
18–25	9.73	10.87	11.50	11.68	12.62	14.74	1.31	0.6814
26–40	9.55	11.16	12.50	12.32	13.19	15.55	1.46
42–55	8.50	11.25	12.36	12.32	13.52	16.26	1.76
≥56	9.51	11.02	12.60	12.48	13.75	16.25	1.72

^∗ P value was obtained the from likelihood ratio test.