A study of ear biometrics in autopsied cases at the Universiti Kebangsaan Malaysia Medical Centre

Ahmad, Nur Arina; Nor, Faridah Mohd; Shafie, Mohamed Swarhib; Abdullah, Nurul Kharmila; Abdul Razak, Nadiawati; Nor, Nadeeya ‘Ayn Umaisara Mohamad; Omar, Normaliza

doi:10.1186/s41935-023-00374-x

Egyptian Journal of Forensic Sciences

Table 1 The ear biometrics in males and females

From: A study of ear biometrics in autopsied cases at the Universiti Kebangsaan Malaysia Medical Centre

Ear biometrics	Sex	N	Mean (mm)	Standard deviation	Independent T test (“t” value)	Independent T test (“p” value)
R1	Female	33	6.19	1.81	−1.79	0.07
R1	Male	148	6.85	1.92	−1.79	0.07
R2	Female	33	4.36	1.12	−1.77	0.07
R2	Male	148	4.78	1.25	−1.77	0.07
R3	Female	33	4.27	0.68	−2.49	0.01**
R3	Male	148	4.69	0.92	−2.49	0.01**
R4	Female	33	6.84	1.56	−1.82	0.07
R4	Male	148	7.39	1.57	−1.82	0.07
R5	Female	33	14.37	2.49	0.87	0.38
R5	Male	148	13.91	3.69	0.87	0.38
R6	Female	33	14.81	2.49	−5.17	<0.01**
R6	Male	148	17.61	2.87	−5.17	<0.01**
R7	Female	33	7.28	1.95	−4.60	<0.01**
R7	Male	148	9.28	2.31	−4.60	<0.01**
R8	Female	33	8.10	1.81	−1.32	0.18
R8	Male	148	8.66	2.26	−1.32	0.18
R9	Female	33	21.45	2.40	−3.48	0.01**
R9	Male	148	23.10	2.77	−3.48	0.01**
R10	Female	33	17.56	2.56	−0.68	0.49
R10	Male	148	17.90	2.42	−0.68	0.49
R11	Female	33	15.99	2.37	1.45	0.15
R11	Male	148	15.35	1.91	1.45	0.15
R12	Female	33	20.44	3.82	−0.36	0.71
R12	Male	148	20.73	4.16	−0.36	0.71
Right ear length	Female	33	63.90	5.73	−2.22	0.02*
Right ear length	Male	148	66.73	6.77	−2.22	0.02*
Right ear width	Female	33	31.64	3.06	−4.15	<0.01**
Right ear width	Male	148	34.54	3.74	−4.15	<0.01**
L1	Female	33	5.57	1.77	−1.64	0.10
L1	Male	148	6.13	1.77	−1.64	0.10
L2	Female	33	4.57	1.02	−0.51	0.61
L2	Male	148	7.32	30.95	−0.51	0.61
L3	Female	33	4.54	0.90	−2.24	0.02*
L3	Male	148	4.97	1.01	−2.24	0.02*
L4	Female	33	7.68	1.74	−0.22	0.82
L4	Male	148	7.75	1.41	−0.22	0.82
L5	Female	33	16.01	2.71	−0.10	0.91
L5	Male	148	16.08	3.43	−0.10	0.91
L6	Female	33	14.00	2.27	−4.26	<0.01**
L6	Male	148	16.48	3.15	−4.26	<0.01**
L7	Female	33	6.84	1.52	−3.69	<0.01**
L7	Male	148	8.38	2.28
L8	Female	33	8.77	2.05	−1.19	0.23
L8	Male	148	9.27	2.20	−1.19	0.23
L9	Female	33	20.80	2.26	−3.30	0.01**
L9	Male	148	22.43	2.63	−3.30	0.01**
L10	Female	33	17.83	2.52	−1.22	0.22
L10	Male	148	18.41	2.27	−1.22	0.22
L11	Female	33	16.07	1.73	0.44	0.65
L11	Male	148	15.90	2.04	0.44	0.65
L12	Female	33	20.96	3.37	0.52	0.59
L12	Male	148	20.57	3.93	0.52	0.59
Left ear length	Female	33	64.28	4.55	−2.94	0.01**
Left ear length	Male	148	66.92	5.12	−2.94	0.01**
Left ear width	Female	33	31.92	2.63	−6.34	<0.01**
Left ear width	Male	148	35.44	2.93	−6.34	<0.01**

^**p<0.01, *p<0.05

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