Table 2 Comparison between SAM and RAF in finding genes differentially expressed among four classes in a simulated data set of small sample size (n = 4)

Delta

Number of significances

Number of false positives

Estimated FDR

Delta

Number of significances

Number of false positive

Estimated FDR

True FDR

0.037534

10

5.6

0.56

0.01253

16

6

0.375

0.125

0.044668

10

5.6

0.56

0.37608

13

4

0.308

0.077

0.045738

10

5.6

0.56

0.74013

13

3

0.231

0.077

0.050144

9

4.7

0.52

1.10516

12

2

0.167

0.083

0.052423

9

4.7

0.52

1.47167

11

1

0.091

0

0.055937

9

4.7

0.52

1.84017

10

1

0.100

0

0.059564

9

4.7

0.52

2.58527

9

0

0

0

0.060798

9

4.7

0.52

0.062046

9

4.7

0.52

0.063305

0

0

0