Risk Factors of Early and Late Onset Preeclampsia among Thai Women.

BACKGROUND: Little research has been conducted to specifically identify risk factors of early and late onset preeclampsia among Thai women. OBJECTIVE: To examine risk factors of early and late onset of preeclampsia among Thai women. METHODS: A case-control study of 150 preeclampsia cases with an equal number of normotensive controls was conducted among women who delivered live born singleton infants at King Chulalongkorn Memorial Hospital, Rajavithi Hospital, and Police General Hospital in Bangkok, Thailand from July 2006 to November 2007.