Odds ratio of venous thrombosis in relation to baseline D-dimer concentration, according to presence of precipitating factors for thrombosis.

Logistic regression models were fit for subgroups of thrombosis that were idiopathic (n = 113, ▪), associated with precipitants other than cancer (n = 89, ░), or associated with cancer (n = 68, ■). All models were adjusted for age, sex, race, and BMI. TheP values for trend with increasing quintiles of D-dimer were .003, .006, and .78, respectively.