CRP and venous thromboembolism: LDH = lactate dehydrogenase; PCT = procalcitonin; BUN = blood urea nitrogen; ALT = alanine transaminase; AST = aspartate aminotransferase; ESR = erythrocyte sedimentation rate; CRP = C-reactive protein; INR = international normalized ratio; PT = prothrombin time; aPTT = activated partial thromboplastin time; VTE = venous thromboembolism; CI = confidence interval