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Table 3 Top 5 positive coefficient for each classifier

From: Natural language processing to identify lupus nephritis phenotype in electronic health records

Coefficient ranking

Full MetaMap (binary)

Full MetaMap (count)

MetaMap Mixed

Feature, definition

Coefficient

Feature, definition

Coefficient

Feature, definition

Coefficient

1

C0027697, nephritis

0.04

C0022646, kidney

5.01

C0024143, lupus nephritis

1.26

2

C0024143, lupus nephritis

0.04

C0024143, lupus nephritis

4.79

‘RENAL’

0.64

3

C0022658, kidney disease

0.03

C0033687, proteinuria

3.58

‘nephritis class IV’

0.54

4

C1962972, proteinuria finding

0.03

C1962972, proteinuria finding

3.53

‘proteinuria > 0.5 gm’

0.45

5

C003368, sultroponium

0.03

C1707664, Delayed Release Dosage Form

3.52

C4053955, SLE class IV

0.25

  1. Features are ranked by the value of their associated coefficients
  2. RENAL renal indictor from structured data only, gm gram