In one survey involving participants from 23 countries, nearly one third of the respondents reported that they had not been told about menarche prior to its occurrence.
ففي استطلاع شمل فتيات من ٢٣ بلدا ،‏ تبيّن ان حوالي ثلث اللواتي جرت مقابلتهن لم ينلن اية معلومات عن بداية الحيض .‏