Cross-cultural ages of females' first sexual experience

I found a pretty interesting article that compares the ages of when girls have their first sexual experiences across cultures.  It touches a bit on early marriages and promiscuity and what that implies in terms of sexual health.  I think it could be pretty useful...check it out! http://www.ined.fr/fichier/t_telechargement/8633/telechargement_fichier_en_pesa391.pdf