Table 1. Distribution of anatomical variants by region.

The bold entries indicate the subtotal distribution by continent

*Global total

Country	n	Huang classification
		A1, n	%	A2, n	%	A3, n	%	A4, n	%	A5, n	%	B5, n	%	Other classifications, n	%
Spain	25	9	36.00	2	8.00	3	12.00	8	32.00	2	8.00	1	4.00	0	0.00
Italy	200	129	64.50	28	14.00	24	12.00	16	8.00	0	0.00	0	0.00	3	1.50
Germany	18	2	11.11	2	11.11	4	22.22	5	27.78	1	5.56	0	0.00	5	27.78
Greece	73	48	65.75	7	9.59	4	5.48	13	17.81	1	1.37	0	0.00	0	0.00
Europe	316	188	59.49	39	12.34	35	11.08	42	13.29	4	1.27	1	0.32	8	2.53
Egypt	120	79	65.83	14	11.67	16	13.33	9	7.50	2	1.67	0	0.00	0	0.00
Africa	120	79	65.83	14	11.67	16	13.33	9	7.50	2	1.67	0	0.00	0	0.00
Turkey	79	29	36.71	27	34.18	16	20.25	7	8.86	0	0.00	0	0.00	0	0.00
Palestine	342	309	90.35	29	8.48	2	0.58	1	0.29	1	0.29	0	0.00	0	0.00
Jordan	120	82	68.33	10	8.33	15	12.50	0	0.00	0	0.00	0	0.00	13	10.83
Saudi Arabia	177	104	58.76	19	10.73	12	6.78	32	18.08	2	1.13	0	0.00	8	4.52
Iran	362	163	45.03	78	21.55	48	13.26	13	3.59	0	0.00	0	0.00	60	16.57
India	253	134	52.96	29	11.46	46	18.18	18	7.11	0	0.00	6	2.37	20	7.91
Thailand	163	106	65.03	28	17.18	15	9.20	9	5.52	0	0.00	0	0.00	5	3.07
Taiwan	462	304	65.80	42	9.09	60	12.99	41	8.87	0	0.00	0	0.00	15	3.25
Japan	110	80	72.73	6	5.45	13	11.82	5	4.55	0	0.00	0	0.00	6	5.45
Japan	60	38	63.33	14	23.33	7	11.67	1	1.67	0	0.00	0	0.00	0	0.00
South Korea	300	188	62.67	29	9.67	34	11.33	19	6.33	6	2.00	4	1.33	20	6.67
South Korea	33	25	75.76	1	3.03	3	9.09	0	0.00	1	3.03	0	0.00	3	9.09
Asia	2461	1562	63.47	312	12.68	271	11.01	146	5.93	10	0.41	10	0.41	150	6.10
Canada	30	17	56.67	1	3.33	9	30.00	2	6.67	1	3.33	0	0.00	0	0.00
USA	108	78	72.22	6	5.56	0	0.00	7	6.48	1	0.93	0	0.00	19	17.59
Caribbean	152	109	71.71	29	19.08	7	4.61	6	3.95	0	0.00	0	0.00	1	0.66
Chile	3845	2217	57.66	426	11.08	487	12.67	177	4.60	0	0.00	0	0.00	538	13.99
Americas	4135	2421	58.55	462	11.17	503	12.16	192	4.64	2	0.05	0	0.00	558	13.49
Total*	7032	4250	60.44	827	11.76	825	11.73	389	5.53	18	0.26	11	0.16	716	10.18