Between impaired diffusing capacity and any other included variable (age, BMI, smoking, cardiovascular disease, diabetes, previous DVT/PE, chronic kidney failure, asthma, COPD, obstructive sleep apnoea, intubation, prone position, enoxaparin dose, corticosteroid dose, C-reactive protein at 6 months, or creatinine at 6 months), we found no statistically significant association. Here, CRP is linked to chronic renal failure syndrome.