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Table 1 Prevalence of NCAH due to 21-hydroxylase deficiency among hyperandrogenic women.

From: Nonclassic Congenital Adrenal Hyperplasia

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%) Blanch 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]
  1. *adolescent girls.