Table 1.

Prevalence of NCAH due to 21-hydroxylase deficiency among hyperandrogenic women.

Country	Total # of Women	# NCAH (%)	Citation
USA (NE)	22*	2 (9%)	Emans et al., 1983 [8]
USA (NE)	139	2 (1.4%)	Cobin et al., 1985 [9]
USA (NE)	164	4 (2.4%)	Azziz and Zacur, 1989 [10]
USA (SE)	86	2 (2.3%)	Azziz et al., 1993 [11]
USA (SW)	83	1 (1.2%)	Chetkowski et al., 1984 [12]
USA (SE)	873	18 (1.6%)	Azziz et al., 2004 [13]
Canada	72	4 (5.5%)	Innanen and Vale, 1990 [14]
Puerto Rico	100	1 (1.0%)	Romaguera et al., 2000 [15]
Ireland	96	6 (6.2%)	McLaughlin et al., 1990 [16]
England	50	1 (2.0%)	Turner et al., 1992 [17]
France	400	24 (6.0%)	Kuttenn et al., 1985 [18]
France	69	16 (23%)	Blanché et al., 1997 [19]
Portugal	129	23 (17.8%)	Pall et al., (in press) [20]
Italy (South)	372	14 (4.0%)	Carmina et al., 1987 [21]
Italy (North)	85	1 (1.1%)	Motta et al., 1988 [22]
Italy (Palermo)	950	41 (4.5%)	Carmina et al., 2006 [23]
Spain	270	6 (2.2%)	Escobar-Morreale et al., 2008 [24]
Czech Republic	298	8 (2.7%)	Fanta et al., 2008 [25]
Greece	107	10 (9.3%)	Trakakis et al., 2008 [26]
Turkey (Ankara)	32*	1(3%)	Akinci et al., 1992 [27]
Turkey (Istanbul)	61	20 (33%)	Yarman et al., 2004 [28]
Turkey (Kayseri)	285	6 (2.1%)	Unluhizarci et al., 2010 [29]
Turkey (Central Anatolia)	63	6 (9.5%)	Kamel et al., 2003 [30]
Israel	170	14 (8.2%)	Eldar-Geva et al., 1990 [31]
India	60	3 (8.3%)	Mithal et al., 1988 [32]
India	63	3 (5.7%)	Khandekar et al., 1990 [33]

*adolescent girls.