Pei et al reported the MLWAP for predicting mortality of an older adult with Omicron pneumonia. This can help in allocating resources based on risk. The authors are from Soochow University in Jiangsu, China.
MLWAP appears to be an acronym derived from the names of the parameters.
Omicron is a variant of SARS-CoV-2.
Patient selection: Omicron pneumonia, age >= 60 years
Parameters:
(1) immunosuppression (presumably "M")
(2) serum lactate in mmol/L (L)
(3) white blood cell count in 10^9/L (W)
(4) age in years (A)
(5) PaO2 to FIO2 ratio (P)
Parameter
Finding
Points
immunosuppression
no
0
yes
5
serum lactate
< 2.4 mmol/L
0
>= 2.4 mmol/L
3
WBC count
< 6.7 * 10^9/L
0
>= 6.7 * 10^9/L
2
age in years
< 77 years
0
>= 77 years
2
PaO2 to FIO2 ratio
> 211
0
<= 211
1
total score =
= SUM(points for all of the parameters)
Interpretation:
• minimum score: 0
• maximum score: 13
Total Score
Risk Category
90-day Mortality Rate
0 to 7
low
5.3 to 9.1%
8 to 10
intermediate
39%
11 to 13
high
85%
Performance:
• The area under the ROC curve is 0.86.
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