Androgenetic Alopecia Among Hospital Staff: A Study of Prevalence, Types and a Comparison with General Population in a Secondary Hospital in China

Figures & data

Table 1 Demographic Characteristics of Hospital Staff and the General Population

	Hospital Staff (n=297)	General Population (n=318)	P-value
Sex
Men	105 (35.4%)	109 (34.3%)	0.779
Women	192 (64.6%)	209 (65.7%)
Age
Men	42.8±11.4	40.0±10.3	0.059
Women	43.0±9.4	39.2±11.3	0.400
Prevalence of AGA
Men	42.9%	27.5%	0.019
Women	13.0%	8.1%	0.110
Duration of AGA, years (mean ± SD)
Men	11.6±8.4	9.8±6.3	0.482
Women	10.2±4.3	10.9±9.1	0.520
Family history of AGA
Men	53.3%	46.7%	0.641
Women	44.0%	47.1%	1.000

Figure 1 Prevalence of AGA in hospital staff and the general population.

Table 2 The Prevalence and Types of AGA in Male Staff

Type	Age (Years)
	20–29 (n=15)	30–39 (n=26)	40–49 (n=36)	50–59 (n=16)	60–65 (n=12)	Total (n=105)
III, n (%)	0	1 (3.8)	1 (2.8)	0	0	2 (1.9)
IIIv, n (%)	2 (13.3)	4 (15.4)	4 (11.1)	1 (6.3)	0	11 (10.5)
IIIa, n (%)	0	0	2 (5.6)	0	0	2 (1.9)
IV, n (%)	0	3 (11.5)	7 (19.4)	5 (31.3)	3 (25.0)	18 (17.1)
IVa, n (%)	0	0	1 (2.8)	0	0	1 (1.0)
V, n (%)	0	0	1 (2.8)	1 (6.3)	4 (33.3)	6 (5.7)
Va, n (%)	0	0	0	1 (6.3)	0	1 (1.0)
VI, n (%)	0	0	1 (2.8)	1 (6.3)	0	2 (1.9)
Female pattern, n (%)	0	0	1 (2.8)	0	1 (8.3)	2 (1.9)
Total, n (%, 95% CI)	2 (13.3, –3.9–30.5)	8 (30.8, 13.0–48.5)	18 (50.0, 33.7–66.3)	9 (56.3, 31.9–80.6)	8 (66.7, 40.0–93.3)	45 (42.9, 33.4–52.3)

Table 3 The Prevalence and Types of AGA in Female Staff

Type	Age (Years)
	20–29 (n=37)	30–39 (n=73)	40–49 (n=63)	50–59 (n=16)	60–65 (n=3)	Total (n=192)
I, n (%)	2 (5.4)	3 (4.1)	4 (6.3)	3 (18.8)	0	12 (6.3)
II, n (%)	0	1 (1.4)	4 (6.3)	3 (18.8)	1 (33.3)	9 (4.7)
III, n (%)	0	1 (1.4)	1 (1.6)	0	0	2 (1.0)
Male pattern, n (%)	0	1 (1.4)	1 (1.6)	0	0	2 (1.0)
Total, n (%, 95% CI)	2 (5.4, −1.9–12.7)	6 (8.2, 1.9-14.5)	10 (15.9, 6.8–24.9)	6 (37.5, 13.8–61.2)	1 (33.3, −20.0–86.7)	25 (13.0, 8.3–17.8)

Table 4 Family History of AGA in Affected Male and Female Staff

	Age (Years)
	20–29	30–39	40–49	50–59	60–65	Total (%, 95% CI)
Men, n (%)	0/2	4/8 (50.0)	13/18 (72.2)	6/9 (66.7)	1/8 (12.5)	24/45 (53.3, 38.8–67.9)
Women, n (%)	1/2 (50.0)	3/6 (50.0)	4/10 (40.0)	3/6 (50.0)	0/1	11/25 (44.0, 24.5–63.5)

Figure 2 Prevalence of AGA in male staff. Previous study⁷ and present study.

Su LH, Chen HH. Androgenetic alopecia in policemen: higher prevalence and different risk factors relative to the general population (KCIS no. 23). Arch Dermatol Res. 2011;303(10):753–761.

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