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Table 4 Principal Components analysis of variables.

From: Exhaled volatile organic compounds in patients with non-small cell lung cancer: cross sectional and nested short-term follow-up study

  

Factors

 

Group

1

2

3

Isoprene

1

  

0.797

2-Methylpentane

1

  

0.562

Pentane

1

  

0.531

Ethylbenzene

2

0.851

  

Trimethylbenzene

2

0.794

  

Toluene

2

0.773

  

Benzene

2

0.728

  

Heptane

2

0.629

  

Decane

3

 

0.878

 

Styrene

3

 

0.704

 

Octane

3

 

0.643

 

Pentamethylheptane

3

 

0.592

 
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Respiratory Research

ISSN: 1465-993X

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