Differences of the Morphology of Subaxial Cervical Spine Endplates between Chinese and White Men and Women

Table 4

Dimensions of linear parameters categorized by race and sex.

	Race and sex	C3	C4	C5	C6	C7
EPWu (mm)	Chinese female	14.6 ± 1.5	15.4 ± 1.7	15.8 ± 1.9	16.9 ± 1.7	18.8 ± 2.1
	White female	16.1 ± 1.8	16.9 ± 2.0	17.3 ± 1.5	18.4 ± 1.4	20.1 ± 1.8
	value	0.02	0.03	0.03	0.01	0.08
	Chinese male	15.1 ± 2.1	16.2 ± 1.9	16.4 ± 1.6	17.6 ± 1.2	19.6 ± 1.4
	White male	17 ± 2.7	17.7 ± 1.1	17.9 ± 2.1	19.1 ± 1.4	20.9 ± 1.3
	value	0.03	0.02	0.01	0.03	0.01
EPDu (mm)	Chinese female	13.0 ± 1.8	13.4 ± 1.8	13.4 ± 1.6	14.1 ± 1.7	15.4 ± 1.9
	White female	13.8 ± 1.5	14.5 ± 1.1	15.0 ± 1.6	16.4 ± 2.0	17.2 ± 1.9
	value	0.30	0.06	0.00	0.00	0.01
	Chinese male	14.4 ± 1.9	14.9 ± 2.1	15.4 ± 2.33	15.9 ± 2.0	17.0 ± 1.9
	White male	14.8 ± 1.5	15.2 ± 2.1	15.4 ± 2.0	16.6 ± 2.2	18.0 ± 2.4
	value	0.28	0.69	0.99	0.35	0.19
EPWl (mm)	Chinese female	15.1 ± 1.8	15.6 ± 1.9	16.7 ± 2.0	18.4 ± 2.7	20.3 ± 2.4
	White female	16.8 ± 1.9	17.4 ± 2.7	18.1 ± 1.4	19.1 ± 1.9	22.4 ± 2.9
	value	0.02	0.03	0.04	0.44	0.08
	Chinese male	16.0 ± 2.0	16.5 ± 2.1	18.2 ± 2.3	20.2 ± 2.8	22.5 ± 3.0
	White male	18.0 ± 2.2	18.3 ± 2.8	20.1 ± 1.9	21.6 ± 2.4	23.2 ± 2.9
	value	0.01	0.04	0.04	0.15	0.51
EPDl (mm)	Chinese female	14.9 ± 1.9	15.2 ± 1.9	15.3 ± 2.1	15.5 ± 2.0	15.8 ± 2.2
	White female	15.1 ± 2.2	15.6 ± 2.0	16.5 ± 2.4	17.6 ± 2.0	17.5 ± 2.0
	value	0.78	0.12	0.01	0.01	0.03
	Chinese male	15.7 ± 1.7	16.0 ± 1.8	17.0 ± 2.1	17.3 ± 1.9	17.3 ± 2.2
	White male	16.1 ± 1.9	16.4 ± 2.3	17.1 ± 1.9	18.9 ± 1.5	18.4 ± 2.0
	value	0.07	0.33	0.34	0.01	0.16
EPWu/EPDu	Chinese female	1.12 ± 0.16	1.16 ± 0.19	1.19 ± 0.18	1.20 ± 0.14	1.23 ± 0.16
	White female	1.17 ± 0.18	1.16 ± 0.06	1.16 ± 0.14	1.14 ± 0.18	1.19 ± 0.20
	value	0.62	0.99	0.74	0.43	0.62
	Chinese male	1.08 ± 0.18	1.10 ± 0.17	1.11 ± 0.15	1.12 ± 0.14	1.16 ± 0.12
	White male	1.15 ± 0.15	1.18 ± 0.19	1.19 ± 0.20	1.17 ± 0.15	1.18 ± 0.19
	value	0.26	0.22	0.20	0.22	0.86
EPWl/EPDl	Chinese female	1.02 ± 0.12	1.02 ± 0.11	1.1 ± 0.14	1.19 ± 0.12	1.30 ± 0.26
	White female	1.11 ± 0.11	1.11 ± 0.13	1.07 ± 0.20	1.09 ± 0.13	1.31 ± 0.28
	value	0.04	0.04	0.59	0.03	0.99
	Chinese male	1.01 ± 0.14	1.02 ± 0.11	1.06 ± 0.14	1.19 ± 0.13	1.31 ± 0.19
	White male	1.08 ± 0.18	1.11 ± 0.12	1.17 ± 0.10	1.15 ± 0.17	1.27 ± 0.23
	value	0.29	0.04	0.02	0.45	0.59