"Questions the women are asked during the surveys include: "Was the genital area just nicked/cut without removing any flesh? Was any flesh (or something) removed from the genital area? Was your genital area sewn?"[72] Most women report "cut, some flesh removed" (Types I and II).[73]

Type I is the most common form in Egypt,[74] and in the southern parts of Nigeria.[75] Type III (infibulation) is concentrated in northeastern Africa, particularly Djibouti, Eritrea, Somalia and Sudan.[42] In surveys in 2002–2006, 30 percent of cut girls in Djibouti, 38 percent in Eritrea, and 63 percent in Somalia had experienced Type III.[76] There is also a high prevalence of infibulation among girls in Niger and Senegal,[77] and in 2013 it was estimated that in Nigeria three percent of the 0–14 age group had been infibulated.[78] The type of procedure is often linked to ethnicity. In Eritrea, for example, a survey in 2002 found that all Hedareb girls had been infibulated, compared with two percent of the Tigrinya, most of whom fell into the "cut, no flesh removed" category.[17]?