Table 4 |
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Preoperative parameters and coefficients for prediction of postoperative cardiac surgery outcome by the SPSS and CLASSIF1 classifiers |
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|
SPSS classifier |
CLASSIF1 classifier |
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|
|
|
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|
Parameter (pi) |
Coefficients (ci)* |
Parameters |
POEE patients classification mask** |
|
|
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|
C1-Inhibitor |
- |
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|
C3 |
+ |
||
|
C5 |
0.005105 |
C5 |
+ |
|
C5a/C5-ratio |
0.788609 |
||
|
IL-10 |
0.086488 |
||
|
sL-selectin |
0.001721 |
sL-selectin |
+ |
|
% Neutrophils |
0.024991 |
||
|
Neutrophil count |
+ |
||
|
Monocyte count |
0.002542 |
||
|
Eosinophil count |
- |
||
|
Hematocrit |
0.06021 |
Hematocrit |
+ |
|
Serum protein |
-0.136055 |
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|
Body weight |
0.067000 |
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|
Partial thrombin time |
- |
||
|
Potassium |
- |
||
|
(Constant |
-0.939490) |
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|
|
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|
Formula of the discriminant function: *Constant + |
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|
Bocsi et al. Critical Care 2002 6:226 doi:10.1186/cc1494 |
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, resulting value <0, non-POEE risk, if >0, POEE risk. pi = measured parameter values; ci = classifier coefficients. **Parameter on average above (+) or below (-) the 25–75% percentile thresholds for C1-inhibitor:
300/377 mg/l (25%/75%); C3: 1181/1456 mg/l; C5: 100/131 mg/l; sL-selection: 1102/1501
g/l, neutrophil count: 3900/5520cells/μl; eosinophil count: 85/269cells/μl; hematocrit:
34.0/39.8%; partial thrombin time: 33.3/37.9s; K+: 4.04/4.38mmol/l. Non-POEE patients have, on average, all parameters unchanged (0)
between the 25–75% percentile thresholds. Unknown patients are classified according to the highest number of positional coincidences, with the
POEE or the non-POEE patients classification mask.
