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Table 1 Estimation of true positive and false positive rates under varying significance thresholds using 1X to 5X samples and 90 normal test samples.

From: CARAT: A novel method for allelic detection of DNA copy number changes using high density oligonucleotide arrays

Sample and Data

Stage

p-value < 10-2

p-value < 10-4

p-value < 10-6

Total

  

Count

Percent

Count

Percent

Count

Percent

Count

90 normal samples (autosomes)

SP

409049

5.05%

42182

0.52%

11154

0.14%

8095770

 

KS

40247

0.497%

3302

0.041%

770

0.009%

8095770

 

TR

5417

0.067%

506

0.006%

167

0.002%

8095770

1X

SP

1441

73.71%

694

35.50%

286

14.63%

1955

 

KS

1780

91.05%

714

36.52%

111

5.68%

1955

 

TR

p-value = 1.99 × 10-4

1955

3X

SP

1271

65.01%

879

44.96%

603

30.84%

1955

 

KS

1707

87.31%

1136

58.11%

547

27.98%

1955

 

TR

p-value = 8.13 × 10-6

1955

4X

SP

1726

88.29%

1523

77.90%

1343

68.70%

1955

 

KS

1929

98.67%

1861

95.19%

1697

86.80%

1955

 

TR

p-value = 6.15 × 10-12

1955

5X

SP

1884

96.37%

1801

92.12%

1724

88.18%

1955

 

KS

1950

99.74%

1933

98.87%

1907

97.54%

1955

 

TR

p-value = 1.50 × 10-16

1955

  1. Notes:
  2. 1 SP: Single point analysis
  3. 2 KS: Kernel smoothing with 100 kb window after single point analysis
  4. 3 TR: Tree partitioning of the genome on the kernel smoothed result.