Moderate to severe thrombocytopenia during pregnancy.

Objective: The objective was to investigate obstetric risk factors, complications, and outcomes of pregnancies complicated by moderate to severe thrombocytopenia.

Materials And Methods: A retrospective case-control study comparing 199 pregnant women with moderate to severe thrombocytopenia (platelet count below 100x10(9)/l) with 201 pregnant women without thrombocytopenia, who delivered between January 2003 to April 2004. Stratified analysis, using the Mantel-Haenszel procedure was performed in order to control for confounders.