Oral cleft research: Intraobserver agreement in the use of questionnaires

κ=0.9492, κ=1.0000, κ=0.9281 and ρ=0.9996. We concluded that the background on oral cleft in the family history of patients with this anomaly is a variable with an excellent degree of reliability. Also, the information given by the mothers related to the period of gestation, type of the baby’s cleft and birthweight are reliable.