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Table 3 Integer risk score attributable to each category derived from the coefficients of the logistic regression equation

From: A novel scoring system for early assessment of the risk of the COVID-19-associated mortality in hospitalized patients: COVID-19 BURDEN

Variables

Points awarded

C-reactive protein (CRP) mg/L

 ≤ 73.1 mg/L

0

 > 73.1 mg/L

1

O2 saturation variation (O2 sat Variation)

 Greater than 90%

0

 84–90%

1

 Less than 84%

2

Increased prothrombin time (increased PT)

 ≤ 16.2 s

0

 > 16.2 s

1

Diastolic blood pressure (DBP) mmHg

 > 75 mmHg

0

 ≤ 75 mmHg

1

Blood urea nitrogen (BUN) mg/dL

 ≤ 23 mg/dL

0

 > 23 mg/dL

1

Raised lactate dehydrogenase (Raised LDH) (U/L)

 ≤ 731 Units/lit (U/L)

0

 > 731 Units/lit (U/L)

1

  1. COVID-19 BURDEN risk score = (CRP score) + (O2 sat Variation score) + (Increased PT score) + (DBP score) + (BUN score) + (Raised LDH score). The overall COVID-19 BURDEN risk score is between 0 and 7; the higher the score, the higher the risk of mortality during the course of hospitalization. The cutoff of the risk factor is set at 4. The patients with a score < 4 are categorized as low-risk, having a more favorable outcome, while those with a score ≥ 4 were more likely to have an undesirable outcome