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Table 4 Characteristics of the classification trees constructed on the CRC sample set

From: Comparing the old and new generation SELDI-TOF MS: implications for serum protein profiling

Tree characteristics:

Tree performance*:

Data set

Clusters

(#)

Node 1

 

Node 2

 

Sens (%)

Spec (%)

1a

All

(32)

m/z 15930

≤ 35.576

m/z 51034

≤ 1.372

68.8

62.8

 

Common

(25)

m/z 15930

≤ 35.576

m/z 51034

≤ 1.372

68.8

62.8

1b

All

(27)

m/z 32308

≤ 0.676

-

-

75.6

73.8

 

Common

(25)

m/z 32308

≤ 0.676

-

-

75.6

73.8

2

All

(48)

m/z 4446

≤ 1.136

-

-

82.2

90.5

 

Common

(25)

m/z 32394

≤ 0.149

-

-

73.3

81.0

  1. * tree performance as determined by 10-fold cross validation, sens: sensitivity, spec: specificity
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BMC Medical Genomics

ISSN: 1755-8794

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