JAK2 and deep vein thrombosis: As shown, besides the association of COPD/asthma with overall and venous thrombotic events, other statistically significant associations were found between older (>60 years) age and overall and arterial thrombotic risk, as well as an association between JAK2 positive status and arterial thrombosis (p < 0.050 for all analyses), whereas no other statistically significant associations were recorded.