Table 4 Clinical classification corresponding to the grade of maximum PII.

From: The role of chest CT quantitative pulmonary inflammatory index in the evaluation of the course and treatment outcome of COVID-19 pneumonia

 

Grade 0

(PII = 0%)

Grade I

(PII = 1–25%)

Grade II

(PII = 26–50%)

Grade III

(PII = 51–75%)

Grade IV (PII = 76–100%)

Mild type

1

    

Moderate type

 

50

54

7

 

Severe type

   

2

2

Critical type

    

2

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