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Table 4 Proposed nutrition scoring system

From: Identifying critically ill patients who benefit the most from nutrition therapy: the development and initial validation of a novel risk assessment tool

 

Overall

(n= 598)

Random split A

(n= 299)

Random split B

(n= 299)

Variables in NUTRIC Score

Range

Points

Range

Points

Range

Points

Age

< 50

0

< 50

0

< 60

0

 

50-< 75

1

50-< 75

1

60-< 75

1

 

≥75

2

75+

2

75+

2

APACHE II

< 15

0

< 15

0

< 15

0

 

15-< 20

1

15-< 19

1

15-< 28

2

 

20-28

2

19-28

2

28+

3

 

≥28

3

28+

3

  

SOFA

< 6

0

< 6

0

< 6

0

 

6-< 10

1

6-< 10

1

6-< 10

1

 

≥10

2

≥10

2

≥10

2

# Co-morbidities

0-1

0

0, 1

0

 

0

 

2+

1

2, 3

1

1+

1

   

4+

2

  

Days from hospital to ICU admit

0-< 1

0

0<-1hr

0

ALL

0

 

1+

1

1hr

1

  
     

220+

1

IL6

0-< 400

0

0-350

0

0-< 450

0

 

400+

1

350+

1

450+

1

NUTRIC score discriminative performance

In sample

Out of sample

Out of sample

AUC

0.783

0.771

0.770

Gen R-Squared

0.169

0.163

0.157

Gen Max-rescaled R-Squared

0.256

0.246

0.237

  1. APACHE II, Acute Physiology and Chronic Health Evaluation; AUC, area under the curve; SOFA, Sequential Organ Failure Assessment.
  2. The proposed NUTRIC score is based on the overall sample. However, we randomly split the data into two halves to cross-validate its performance out of sample. The model developed by random split A was evaluated using random split B and vice versa.