"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?" Most women report "cut, some flesh removed" (Types I and II).
Type I is the most common form in Egypt, and in the southern parts of Nigeria. Type III (infibulation) is concentrated in northeastern Africa, particularly Djibouti, Eritrea, Somalia and Sudan. 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. There is also a high prevalence of infibulation among girls in Niger and Senegal, and in 2013 it was estimated that in Nigeria three percent of the 0–14 age group had been infibulated. 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.?