Classification of exposure categories. Participants were divided into 3 different exposure categories: VTE-exposed, cancer-exposed, and cancer-related VTE–exposed. The date of cancer diagnosis was brought forward by 1 year, assuming that the cancer is already present 1 year before diagnosis. 1, +++ VTE-exposed; 2, ∗∗∗ cancer-exposed; 3a+b, ∞∞∞ cancer-related VTE–exposed.