Auricular dimensions in computed-tomography: Unveiling the relationship between ear dimensions, age, and sex using three-dimensional volume rendering reconstructions

Table 2 Quantitative results for size measurements in cm for males (n = 329) in total and for each age group, mean ± SD/ 95%CI

Side	Measurement (cm)	Total	18-30 year (n = 35)	31-50 year (n = 63)	51-70 year (n = 140)	71-90 year (n = 83)	> 91 year (n = 8)
Right ear	Length 1	6.91 ± 0.51	6.44 ± 0.34	6.66 ± 0.48	6.97 ± 0.46	7.17 ± 0.43	7.29 ± 0.5
		6.47-7.36	6.17-6.71	6.28-7.04	6.61-7.34	6.82-7.51	6.93-7.66
	Length 2	2.83 ± 0.35	2.51 ± 0.23	2.73 ± 0.34	2.84 ± 0.32	3 ± 0.31	3.09 ± 0.29
		2.44-3.22	2.19-2.83	2.26-3.21	2.4-3.29	2.57-3.42	2.76-3.42
	Width 1	3.94 ± 0.32	3.36 ± 0.2	3.86 ± 0.29	3.98 ± 0.3	4.06 ± 0.31	4.19 ± 0.39
		3.58-4.31	3.40-3.86	3.54-4.18	3.37-4.32	3.76-4.36	3.81-4.57
	Width 2	3.51 ± 0.34	3.34 ± 0.27	3.4 ± 0.26	3.51 ± 0.32	3.66 ± 0.35	3.76 ± 0.44
		3.14-3.89	3.03-3.65	3.11-3.69	3.15-3.87	3.26-4.05	3.26-4.25
	Perimeter	17.66 ± 1.25	16.36 ± 0.78	17.11 ± 1.13	17.81 ± 1.1	18.26 ± 1.11	18.7 ± 1.48
		17.05-18.27	15.98-16.74	16.54-17.68	17.27-18.35	17.71-18.8	18.02-19.39
Left ear	Length 1	6.93 ± 0.52	6.46 ± 0.37	6.7 ± 0.5	6.98 ± 0.48	7.19 ± 0.46	7.29 ± 0.56
		6.47-7.39	6.17-6.76	6.3-7.1	6.59-7.36	6.82-7.55	6.87-7.71
	Length 2	2.84 ± 0.34	2.54 ± 0.23	2.76 ± 0.35	2.85 ± 0.31	2.97 ± 0.32	3.1 ± 0.32
		2.45-3.22	2.22-2.86	2.27-3.24	2.43-3.28	2.54-3.41	2.73-3.46
	Width 1	4.01 ± 0.36	3.69 ± 0.25	3.91 ± 0.32	4.05 ± 0.33	4.13 ± 0.35	4.4 ± 0.38
		3.61-4.42	3.41-3.97	3.55-4.27	3.68-4.42	3.78-4.48	4.03-4.78
	Width 2	3.46 ± 0.31	3.32 ± 0.24	3.36 ± 0.24	3.47 ± 0.32	3.57 ± 0.33	3.72 ± 0.32
		3.11-3.82	3.05-3.6	3.09-3.64	3.11-3.835	3.2-3.94	3.35-4.08
	Perimeter	17.71 ± 1.28	16.47 ± 0.82	17.21 ± 1.16	17.84 ± 1.21	18.29 ± 1.12	18.76 ± 1.38
		17.1-18.32	16.07-16.87	16.62-17.79	17.25-18.44	17.74-18.84	18.12-19.39