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Table 1 Influence of the size of data sets on the sensitivity and specificity of different data sets

From: Evaluation of a microarray-hybridization based method applicable for discovery of single nucleotide polymorphisms (SNPs) in the Pseudomonas aeruginosa genome

   

sensitivity

 

specificity

treatment group sizea

control group sizea

total

SNP

mismatch

absent

total

1

1

0.585

0.481

0.740

0.848

0.989

1

1

0.600

0.500

0.747

0.860

0.967

1

1

0.588

0.479

0.751

0.866

0.998

1

1

0.603

0.497

0.759

0.874

0.989

2

2

0.593

0.488

0.750

0.863

0.997

4

4

0.590

0.483

0.752

0.866

0.998

6

6

0.572

0.459

0.742

0.863

0.999

  1. a The four analyses of 2 × 1 array are the four possible combinations of arrays that were used in the 2 × 2 analysis. The 2 × 4 and 2 × 6 analyses contain the above stated microarrays plus additional ones.