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Table 2 Variables selected from each of the methods for RA status andchromosome 18a

From: Comparison of variable and model selection methods for genetic association studies using the GAW15 simulated data

 

Replication

SNPs/bp

Methods

base pair

SNP265/65345780

SNP266/65694950

SNP268/66045170b

SNP269/66048930

SNP273/6721130

Single marker testa

Rep50

-

X

X

X

X

 

Rep51

-

-

X

X

-

 

Rep52

-

-

X

X

-

Random forest

Rep50

-

-

-

X

-

 

Rep51

-

-

-

X

-

 

Rep52

-

X

X

X

-

Classification treec

Rep50

-

X

X

X

-

 

Rep51

-

-

X

X

-

 

Rep52

-

-

X

X

-

Stepwise regression

Rep50

-

-

X

X

-

 

Rep51

-

-

X

X

-

 

Rep52

-

-

X

X

-

BMA

Rep50

X

-

X

X

-

 

Rep51

-

-

-

X

-

 

Rep52

-

-

X

X

-

  1. aWe analyzed 1500 cases, 2000 controls, and 303 SNPs.
  2. bItalics indicates SNPs simulated with a genetic signal.
  3. cClassification tree method implemented using rpart.