Table 1.

Characteristics of patients with and without thrombosis

VariableNWith thrombosis (n = 28)Without thrombosis (n = 30)P
nMeanSDnMeanSD
Age, y   55.9 18.5  65.6 12.1  
Sex         
 Male 29 12   17    
 Female 29 16   13    
Diagnosis         
 PV 39 19   20    
 ET 19   10    
Laboratory tests         
 White blood cell count, × 109/L   10.4 9.3  6.9 3.3 .076 
 Hemoglobin, g/dL   15.1 6.3  14.7 2.5 .764 
 Platelets, × 109/L   648.0 597.8  470.4 330.6 .173 
 Patients with JAK2V617F mutation  27   23    
 JAK2V617F allelic burden 50  39.8 37.3  19.8 20.9 .022 
Thrombosis type     NA    
 Venous  22       
 Arterial        
Medications*         
 Aspirin    19    
 Warfarin  14   —    
 Rivaroxaban    —    
 Aspirin plus clopidogrel    —    
 Statins       
 NSAIDs  —      
 Hydroxyurea  11   13    
 Pegylated IFN-α       
 Ruxolitinib       
 Busulfan    —    
VariableNWith thrombosis (n = 28)Without thrombosis (n = 30)P
nMeanSDnMeanSD
Age, y   55.9 18.5  65.6 12.1  
Sex         
 Male 29 12   17    
 Female 29 16   13    
Diagnosis         
 PV 39 19   20    
 ET 19   10    
Laboratory tests         
 White blood cell count, × 109/L   10.4 9.3  6.9 3.3 .076 
 Hemoglobin, g/dL   15.1 6.3  14.7 2.5 .764 
 Platelets, × 109/L   648.0 597.8  470.4 330.6 .173 
 Patients with JAK2V617F mutation  27   23    
 JAK2V617F allelic burden 50  39.8 37.3  19.8 20.9 .022 
Thrombosis type     NA    
 Venous  22       
 Arterial        
Medications*         
 Aspirin    19    
 Warfarin  14   —    
 Rivaroxaban    —    
 Aspirin plus clopidogrel    —    
 Statins       
 NSAIDs  —      
 Hydroxyurea  11   13    
 Pegylated IFN-α       
 Ruxolitinib       
 Busulfan    —    

Common comorbidities for patients with thrombosis included portal hypertension, gastroesophageal reflux disease, and hypothyroidism; for patients without thrombosis, they included hypertension, gastroesophageal reflux disease, and diabetes.

NA, not applicable; NSAIDs, nonsteroidal anti-inflammatory drugs; SD, standard deviation.

*

Comorbidities and medications are reported at the time of sample collection.

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