Table 4 Positive predictive and negative predictive values (PPV and NPV, respectively) examination using a predictive cutoff of 2.5%

From: Comparison of discriminatory power and accuracy of three lung cancer risk models

   

P -value

 

P -value

Smoking status

Model

PPV

(1)

(2)

NPV

(1)

(2)

All

Spitz

0.882

  

0.450

  
 

Bach

0.809

0.009

 

0.447

0.911

 
 

LLP

0.759

<0.001

0.049

0.560

<0.001

<0.001

Former

Spitz

0.855

  

0.520

  
 

Bach

0.836

0.851

 

0.526

0.832

 
 

LLP

0.726

<0.001

0.058

0.649

<0.001

<0.001

Current

Spitz

0.919

  

0.323

  
 

Bach

0.804

0.002

 

0.354

0.418

 
 

LLP

0.809

<0.001

0.943

0.384

0.110

0.507

  1. Abbreviation: LLP=Liverpool Lung Project.
  2. (1) Comparison of the Spitz and Bach and the Spitz and LLP models.
  3. (2) Comparison of Bach and LLP values.
  4. Bold values represent results still significant to the 5% level after using the Bonferroni method for multiple corrections.
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