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Table 1: HMC morphologic variants by gender
Omega Medially Asymmetric Epsilon Epsilon Laterally Asymmetric Epsilon Null Total
No. (%) No. (%) No. (%) No. (%) No. (%) No.
Overall 
    Left hemisphere 201 (78.2) 7 (2.7) 31 (12.1) 14 (5.4) 4 (1.6) 257
    Right hemisphere 201 (78.2) 8 (3.1) 21 (8.2) 22 (8.6) 5 (1.9) 257
    Total 402 (78.2) 15 (2.9) 52 (10.1) 36 (7.0) 9 (1.8) 514
Men 
    Left hemisphere 105 (73.4) 4 (2.8) 23 (16.1) 10 (7.0) 1 (0.7) 143
    Right hemisphere 114 (79.7) 2 (1.4) 16 (11.2) 10 (7.0) 1 (0.7) 143
    Total^* 219 (76.6) 6 (2.1) 39 (13.6) 20 (7.0) 2 (0.7) 286
Women 
    Left hemisphere 96 (84.2) 3 (2.6) 8 (7.0) 4 (3.5) 3 (2.6) 114
    Right hemisphere 87 (76.3) 6 (5.3) 5 (4.4) 12 (10.5) 4 (3.5) 114
    Total^† 183 (80.3) 9 (3.9) 13 (5.7) 16 (7.0) 7 (3.1) 228
* χ² = 13.675 with 4 df; P = .008.
† χ² = 7.933 with 1 df; P = .005.

	Omega	Medially Asymmetric Epsilon	Epsilon	Laterally Asymmetric Epsilon	Null	Total
	No. (%)	No. (%)	No. (%)	No. (%)	No. (%)	No.
Overall
Left hemisphere	201 (78.2)	7 (2.7)	31 (12.1)	14 (5.4)	4 (1.6)	257
Right hemisphere	201 (78.2)	8 (3.1)	21 (8.2)	22 (8.6)	5 (1.9)	257
Total	402 (78.2)	15 (2.9)	52 (10.1)	36 (7.0)	9 (1.8)	514
Men
Left hemisphere	105 (73.4)	4 (2.8)	23 (16.1)	10 (7.0)	1 (0.7)	143
Right hemisphere	114 (79.7)	2 (1.4)	16 (11.2)	10 (7.0)	1 (0.7)	143
Total^*	219 (76.6)	6 (2.1)	39 (13.6)	20 (7.0)	2 (0.7)	286
Women
Left hemisphere	96 (84.2)	3 (2.6)	8 (7.0)	4 (3.5)	3 (2.6)	114
Right hemisphere	87 (76.3)	6 (5.3)	5 (4.4)	12 (10.5)	4 (3.5)	114
Total^†	183 (80.3)	9 (3.9)	13 (5.7)	16 (7.0)	7 (3.1)	228