A Cross-sectional Comparison of Cleft Lip Severity in 3 Regional Populations.

Objective: The purpose of this cross-sectional study was to compare the severity of unilateral cleft lips in populations of Asia, Sub-Saharan Africa, and Northern Africa and the Middle East. We hypothesize that severity of unilateral cleft lips shows significant variation between these populations.

Methods: Medical photographs of 780 patients with primary unilateral cleft lips treated by Operation Smile during November 2007 were reviewed.