Comparison of cleft lip only and cleft lip and palate, Hawai'i, 1986-2003.

Using birth defects registry data, this investigation compared cleft lip only (CLO) and cleft lip and palate (CLP). CLP cases were more likely than CLO cases to expire after birth (3.2% versus 1.0%), be boys (68.0% versus 56.5%), Pacific Islander (26.5% versus 16.4%), have lower birth weight (20.4% versus 11.1%), and lower gestational age (22.6% versus 20.4%).