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Table 3 The Z-log-transformed intensities of the peaks detected with SELDI-TOF MS, ordered by their m/z.

From: Searching for early breast cancer biomarkers by serum protein profiling of pre-diagnostic serum; a nested case-control study

  Cases
(n = 65)
Controls
(n = 65)
  Paired
T test
M/z Mean
Z-log-transformed
intensity (SD)
Mean
Z-log-transformed
intensity (SD)
Intensity in cases
vs. controls
p-value
2958 0.06 (0.95) -0.03 (1.02) - .61
3323 0.21 (0.98) -0.19 (0.97) Higher .02
3888 0.12 (1.00) -0.13 (0.99) - .18
4649 0.03 (0.95) -0.02 (1.00) - .80
4824 -0.09 (0.85) 0.13 (1.11) - .21
5343 0.09 (0.87) -0.05 (1.08) - .43
5911 0.00 (0.76) 0.03 (1.16) - .86
6117 0.03 (0.90) -0.01 (1.06) - .81
6439 0.09 (0.99) -0.11 (1.01) - .27
6637 0.11 (0.97) -0.10 (1.03) - .23
6842 0.08 (1.01) -0.07 (1.00) - .43
6948 -0.12 (1.01) 0.14 (0.93) - .15
7476 -0.04 (0.94) 0.05 (1.06) - .62
7772 0.06 (0.95) -0.08 (1.05) - .45
7978 0.11 (0.97) -0.12 (1.02) - .21
8148 0.11 (0.97) -0.12 (1.02) - .21
8609 -0.04 (1.02) 0.07 (0.97) - .55
8938 0.19 (1.02) -0.14 (0.94) Higher .06
9294 0.03 (0.89) 0.00 (1.03) - .88
9427 0.15 (1.09) -0.17 (0.88) - .08
9501 0.06 (0.87) -0.05 (1.06) - .54
13892 -0.08 (0.97) 0.12 (0.95) - .26
  1. M/z: mass-to-charge ratio; SD: standard deviation; -: No statistically significant difference in intensity