Clinicoepidemiological Observational Study of Acquired Alopecias in Females Correlating with Anemia and Thyroid Function

Table 4

Comparison between prevalence of female pattern hair loss.

Age in years	Wang et al. [8] (%)	Paik et al. [9] (%)	Birch et al. [10] (%)	Gan and Sinclair [11] (%)	Present study (%)
15–20	—	—	—	—	0.7
21–30	1.30	0.2	12.3	12.00	7.4
31–40	2.30	2.3	17.00	—	8.1
41–50	5.40	3.8	25.40	25.00	5.9
51–60	7.50	7.4	27.90	—	1.4
61–70	10.30	11.7	41.10	41.00	—
71–80	11.80	24.7	53.60	50.00	—