ALERT Scale Calculation: Difference between revisions
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Ttenbergen (talk | contribs) m (ADL Score now has its own page so just linking there instead of duplicating here.) |
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*-3.8390 + (0.1570 x male gender) | *-3.8390 + (0.1570 x male gender) | ||
*+(0.0712 x [[Charlson Comorbidity Index]]) | *+(0.0712 x [[Charlson Comorbidity Index]]) | ||
*+(0.0532 x Total ADL Score | *+(0.0532 x Total [[ADL Score]] | ||
*-(0.1720 x [[Glasgow Coma Scale | Glasgow Coma Scale (GCS)]]) | *-(0.1720 x [[Glasgow Coma Scale | Glasgow Coma Scale (GCS)]]) | ||
*+(0.0678 x age) | *+(0.0678 x age) | ||
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The cut-off probability for '''R''' is 0.088 . "A cut-off point of 0.088, or a predicted probability of adverse outcome of 8.8%, was used to classify patients into two groups; high-risk and low-risk of adverse outcome." ([[Media:Bmjopen-2014-005501.ALERT SCALE.pdf|from publication]]) | The cut-off probability for '''R''' is 0.088 . "A cut-off point of 0.088, or a predicted probability of adverse outcome of 8.8%, was used to classify patients into two groups; high-risk and low-risk of adverse outcome." ([[Media:Bmjopen-2014-005501.ALERT SCALE.pdf|from publication]]) | ||
=== | == Related articles == | ||
{{Related Articles}} | |||
[[Category:ALERT Scale]] | [[Category:ALERT Scale]] | ||
Revision as of 14:28, 2021 July 15
ALERT Scale Calculation
Binary logistic regression resulted in the following outcome model:
- LN(R/1-R) = Y
Y =
- -3.8390 + (0.1570 x male gender)
- +(0.0712 x Charlson Comorbidity Index)
- +(0.0532 x Total ADL Score
- -(0.1720 x Glasgow Coma Scale (GCS))
- +(0.0678 x age)
- -(0.0004 x (age x age)
- +(0.0175 x heart rate)
- +(0.0631 x respiratory rate)
- +(0.0289 x white blood cell count)
- -(0.0410 x systolic blood pressure)
- +(0.000121 x (systolic blood pressure x systolic blood pressure)
Where R is the risk of bad outcome and the categorical variable gender, is coded female=0 and male=1.
How to calculate R:
- R=exp(Y)/1 + exp(Y)
- Heart rate, respiratory rate, White Blood cell Count (WBC), systolic Blood Pressure (sBP) - are continuous data
The cut-off probability for R is 0.088 . "A cut-off point of 0.088, or a predicted probability of adverse outcome of 8.8%, was used to classify patients into two groups; high-risk and low-risk of adverse outcome." (from publication)
Related articles
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