. 2022 Jan 25;15:117–126. doi: 10.2147/CCID.S347898

Table 2.

Shedding Hair Parameters of the Refined Wash Test in Normal, AGA and TE Groups

Classification	Shedding Hairs, No.	Hair Diameter (μm)	Vellus Hairs (%)	Terminal Hairs (%)
	Mean ± SD	Mean ± SMean ± SD	Mean ± SD	Mean ± SD
Normal	27.9 ± 12.2^a	76.9 ± 9.0^a	1.0 ± 1.6^a	79.7 ± 12.7^a
AGA	52.2 ± 28.5^b	60.0 ± 9.5^b	8.3 ± 6.6^b	48.8 ± 20.1^b
TE	125.5 ± 62.7^c	82.7 ± 9.2^c	1.0 ± 1.0^a	85.3 ± 8.7^a
p-value^§	< 0.001*	< 0.001*	< 0.001*	< 0.001*
Normal	27.9 ± 12.2^a	76.9 ± 9.0^a	1.0 ± 1.6^a	79.7 ± 12.7^a
AGA
Male pattern	58.8 ± 32.7^b	57.4 ± 8.2^b	8.2 ± 6.1^b	43.4 ± 18.3^b
Female pattern	43.7 ± 19.6^c	63.2 ± 10.2^c	8.3 ± 7.2^b	55.6 ± 20.4^c
p-value^§	< 0.001*	< 0.001*	< 0.001*	< 0.001*
Normal	27.9 ± 12.2^a	76.9 ± 9.0^a	1.0 ± 1.6^a	79.7 ± 12.7^a
AGA
Hamilton–Norwood III	48.7 ± 23.8^b	64.4 ± 7.1^b	4.4 ± 2.7^b	57.9 ± 15.3^b
Hamilton–Norwood IV	60.5 ± 34.3^b	56.4 ± 5.6^{b, c}	7.0 ± 1.9^b	40.6 ± 15.4^c
Hamilton–Norwood V	76.3 ± 44.6^{a, b}	54.1 ± 6.6^c	12.7 ± 8.1^b	39.9 ± 14.3^c
Hamilton–Norwood VI	58.1 ± 29.3^{a, b}	49.2 ± 3.7^c	12.8 ± 7.6^b	24.2 ± 8.3^c
p-value ^§	< 0.001*	< 0.001*	< 0.001*	< 0.001*
Normal	27.9 ± 12.2^a	76.9 ± 9.0^a	1.0 ± 1.6^a	79.7 ± 12.7^a
AGA
Ludwig I	39.6 ± 18.9^b	64.5 ± 11.0^b	9.2 ± 7.2^b	58.9 ± 21.4^b
Ludwig II	48.9 ± 19.9^b	61.6 ± 9.3^b	7.1 ± 7.3^b	51.3 ± 18.7^b
p-value ^§	< 0.001*	< 0.001*	< 0.001*	< 0.001*

Notes: *Statistically significant at p <0.05. ^a,b,cDifferent letters within each column denote statistically significant differences. ^§From ANOVA.

Abbreviations: AGA, androgenetic alopecia; TE, telogen effluvium.