The allele and genotype frequencies of the NOS3 polymorphism (rs1799983) were significantly different between subjects with de</span>ep vein thrombosis and control subjects.
-922A/G shows both genotypic (P=0.0218; chi2=5.25; O.R=1.94) as well as allelic association (P=0.0014; chi2=10.19; O.R=2.0) while 894G/T shows only allelic (P=0.04; chi2=3.93; O.R=3.93) association with DVT.