Table 2.

Medullary Diameters And Indices For Each Hairstyle From The Five Scalp Regions

Scalp Regions	Afro			Natural-Styled			Chemically Relaxed
N	Diameter (SD)	Index (SD)	N	Diameter (SD)	Index (SD)	N	Diameter (SD)	Index (SD)
F	7	19.50(3.59)	0.260(0.057)	24	14.95(4.75)	0.224(0.067)	17	16.99(11.53)	0.206(0.129)
L	17	19.08(6.32)	0.273(0.103)	16	14.85(4.92)	0.236(0.113)	18	9.916(4.08)	0.128(0.062)
R	16	16.99(4.06)	0.237(0.039)	18	14.71(4.39)	0.213(0.060)	17	14.27(9.56)	0.169(0.105)
O	15	15.48(4.01)	0.229(0.078)	19	14.32(6.20)	0.210(0.084)	21	13.02(5.89)	0.171(0.084)
V	8	15.47(4.19)	0.187(0.047)	17	15.23(4.59)	0.197(0.052)	20	14.94(8.78)	0.178(0.110)

Abbreviations: Scalp hair origin; F, frontal; L, left temporal; R, right temporal; O, occipital; V, vertex; N, number of hair strands.