scholarly journals Selection of Variables in Regression Models Based on Inflated Distributions

2011 ◽  
Vol 7 (2-Sp) ◽  
Author(s):  
Aruna Rao ◽  
Sumathi K
Keyword(s):  
Regression Models ◽  
Selection Of Variables ◽  
Selection Of

scholarly journals Examination of the association of steroids with fluid accumulation in critically ill patients, considering the possibility of biases

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Amit Frenkel ◽  
Ran Abuhasira ◽  
Yoav Bichovsky ◽  
Anton Bukhin ◽  
Victor Novack ◽  
...  
Keyword(s):  
Fluid Balance ◽  
Regression Models ◽  
Positive Fluid Balance ◽  
Fluid Accumulation ◽  
Glucocorticoid Treatment ◽  
The Third ◽  
Icu Stay ◽  
Selection Of Variables ◽  
Mineralocorticoid Activity ◽  
Selection Of

AbstractGlucocorticoids might have significant influence on positive fluid balance, mostly due to their mineralocorticoid effect. We assessed the association between glucocorticoid therapy and fluid balance in septic patients, in the intensive care unit (ICU). We considered two definitions of exposure: daily exposure to glucocorticoids and glucocorticoid treatment at any time. Of 945 patients, 375 were treated with glucocorticoids in the ICU. We applied four regression models. In the first, fluid balance did not differ during days with and without glucocorticoid treatment, among patients treated and not treated with glucocorticoids in the ICU. In our second model, daily fluid balance was increased in patients who were ever treated with glucocorticoids during their ICU stay compared to untreated patients. In the third model, which included only patients treated with glucocorticoids during their ICU stay, glucocorticoid treatment days were not associated with daily fluid balance. In the last model, on "steroid-free days", patients who received glucocorticoid treatment during their ICU stay had a positive fluid balance compared to those who were never treated with steroids. Despite their known mineralocorticoid activity, glucocorticoids themselves appear not to contribute substantially to fluid retention. This work highlights the importance of precise selection of variables to mitigate biases.

Optimization of integrated fuzzy decision tree and regression models for selection of oil spill response method in the Arctic

2021 ◽  
Vol 213 ◽  
pp. 106676
Author(s):  
Saeed Mohammadiun ◽  
Guangji Hu ◽  
Abdorreza Alavi Gharahbagh ◽  
Reza Mirshahi ◽  
Jianbing Li ◽  
...  
Keyword(s):  
Decision Tree ◽  
Oil Spill ◽  
Regression Models ◽  
The Arctic ◽  
Fuzzy Decision ◽  
Fuzzy Decision Tree ◽  
Oil Spill Response ◽  
Response Method ◽  
Selection Of
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