Myint et al proposed the SOAR score for evaluating an older patient with a community-acquired pneumonia (CAP). These can help to identify a patient with more severe disease. The authors are from Norfolk and Norwich University Hospital, University of Cambridge, and Addenbrooke's Hospital in England.
The score was derived following analysis of the CURB group of scores for CAP.
Parameters:
(1) systolic blood pressure (S)
(2) oxygenation (O)
(3) age (A)
(4) respiratory rate (R)
Parameter
Finding
Points
systolic blood pressure
>= 90 mm Hg
0
< 90 mm Hg
1
oxygenation
PaO2/FIO2 >= 250
0
PaO2/FIO2 < 250
1
age
< 65 years of age
0
>= 65 years of age
1
respiratory rate
< 30 breaths per minute
0
>= 30 breaths per minute
1
total score =
= SUM(points for all 4 parameters)
Interpretation:
• minimum score: 0
• maximum score: 4
• A score >= 2 indicates severe community-acquired pneumonia with increased mortality.
Performance:
• The cutoff of >= 2 was associated with a sensitivity of 81% and specificity of 59% in the study population for predicting mortality. The negative predictive value was 94% (good for excluding) but the positive predictive value was only 27% (high false positives).
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