Table 2.

Detection of AAV-2 DNA in Trophoblast Cells from Cases and Controls

	Controls, N = 27	PE* < 37 weeks, N = 40	PE < 34 weeks,†N = 30
AAV-2 (+)‡	5	22	15
AAV-2 (−)	22	18	15
%AAV-2 (+)	18.5%	55.0%	50.0%
P value§		0.002	0.01

^*PE = preeclampsia. 

^†PE < 34 weeks = subgroup of preeclampsia cases that delivered remote from term (<34 weeks’ gestation). 

^‡AAV-2 (+) = adeno-associated virus-2 DNA detected in trophoblast cells at basal plate of placentas. 

^§P values determined by Fisher’s exact tests comparing case groups to controls.