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. 2018 Sep 10;19:317. doi: 10.1186/s12859-018-2318-8

Table 3.

Simulation study 1, scenario 1 with nX=30, nY=10 and 100 runs

Δ=1.5
Nb. of α
DE genes 0.1 0.05 0.01
50 p^m 0.85 1 1
% 97.2 (2.8) 91.1 (2.1) 69.6 (6.7)
100 p^m 1 1 1
% 93.7 (2.5) 86.0 (3.5) 60.1 (5.0)
200 p^m 1 1 1
% 84.9 (2.6) 70.5 (3.5) 34.9 (3.4)
Δ=2
Nb. of α
DE genes 0.1 0.05 0.01
50 p^m 0.13 0.33 0.98
% 99.7 (0.7) 99.2 (1.2) 93.2 (3.6)
100 p^m 0.38 0.88 1
% 99.6 (0.6) 98.4 (1.0) 88.4 (3.2)
200 p^m 0.99 1 1
% 97.8 (1.1) 92.1 (1.9) 65.3 (4.0)
Δ=3
Nb. of α
DE genes 0.1 0.05 0.01
50 p^m 0.00 0.00 0.02
% 100 100 96.0 (0.3)
100 p^m 0.00 0.00 0.14
% 100 100 99.8 (0.5)
200 p^m 0.01 0.11 0.97
% 100.0 (0.1) 99.9 (0.2) 98.1 (1.1)

Evaluation of the first step of the ORdensity method using different values of α. The Table shows the estimated probability, p^m, of no considering as a potential DE gene at least one gene that it really is, and the mean proportion of DE genes (row named “%”) that the procedure considered as potential DE genes. Corresponding standard deviations are in brackets