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. Author manuscript; available in PMC: 2018 Mar 16.
Published in final edited form as: Biometrics. 2017 May 8;74(1):321–330. doi: 10.1111/biom.12710

Table 2. Simulation results - lognormal distribution.

Scenario π μ σ Prediction Error



Estimate (sd) Bias Estimate Bias Estimate Bias
N=25 cases
π (μ; σ)
0.10 Sc 1: (-2.0; 1.5) 0.139 (0.218) 0.039 -1.62 0.38 1.06 -0.44 0.103
Sc 2: (-1; 1) 0.122 (0.139) 0.022 -1.08 -0.08 0.74 -0.26 0.046
Sc 3: (-0.25; 0.50) 0.108 (0.069) 0.008 -0.38 -0.13 0.45 -0.05 0.013
Sc 4: (0.55; 0.45) 0.104 (0.062) 0.004 0.40 -0.15 0.43 -0.02 0.009
Sc 5: (0.7; 0.3) 0.104 (0.061) 0.004 0.56 -0.14 0.36 0.06 0.009
0.25 Sc 1: (-2.0; 1.5) 0.273 (0.189) 0.023 -1.91 0.09 1.08 -0.42 0.105
Sc 2: (-1; 1) 0.262 (0.115) 0.012 -1.10 -0.10 0.82 -0.18 0.035
Sc 3: (-0.25; 0.50) 0.250 (0.090) 0.000 -0.28 -0.03 0.41 -0.09 0.003
Sc 4: (0.55; 0.45) 0.249 (0.088) -0.001 0.53 -0.02 0.38 -0.07 0.001
Sc 5: (0.7; 0.3) 0.249 (0.087) -0.001 0.69 -0.01 0.26 -0.04 0.000
0.50 Sc 1: (-2.0; 1.5) 0.528 (0.211) 0.028 -2.04 -0.04 1.32 -0.18 0.137
Sc 2: (-1; 1) 0.506 (0.116) 0.006 -1.06 -0.06 0.95 -0.05 0.034
Sc 3: (-0.25; 0.50) 0.499 (0.100) -0.001 -0.27 -0.02 0.47 -0.03 0.002
Sc 4: (0.55; 0.45) 0.498 (0.100) -0.002 0.54 -0.01 0.42 -0.03 0.000
Sc 5: (0.7; 0.3) 0.498 (0.100) -0.002 0.69 -0.01 0.27 -0.03 0.000
0.75 Sc 1: (-2.0; 1.5) 0.747 (0.168) -0.003 -1.97 0.03 1.35 -0.15 0.122
Sc 2: (-1; 1) 0.759 (0.103) 0.009 -1.04 -0.04 0.96 -0.04 0.037
Sc 3: (-0.25; 0.50) 0.754 (0.087) 0.004 -0.26 -0.01 0.47 -0.03 0.002
Sc 4: (0.55; 0.45) 0.754 (0.087) 0.004 0.54 -0.01 0.43 -0.02 0.000
Sc 5: (0.7; 0.3) 0.754 (0.087) 0.004 0.69 -0.01 0.28 -0.02 0.000

N = 100 cases
π (μ ; σ)
0.10 Sc 1: (-2.0; 1.5) 0.121 (0.122) 0.021 -1.98 0.02 1.17 -0.33 0.051
Sc 2: (-1; 1) 0.105 (0.040) 0.005 -1.10 -0.10 0.90 -0.10 0.013
Sc 3: (-0.25; 0.50) 0.100 (0.031) 0.000 -0.27 -0.02 0.44 -0.06 0.001
Sc 4: (0.55; 0.45) 0.100 (0.031) 0.000 0.54 -0.01 0.40 -0.05 0.000
Sc 5: (0.7; 0.3) 0.100 (0.031) 0.000 0.69 -0.01 0.26 -0.04 0.000
0.25 Sc 1: (-2.0; 1.5) 0.266 (0.101) 0.016 -2.09 -0.09 1.42 -0.08 0.058
Sc 2: (-1; 1) 0.251 (0.050) 0.001 -1.04 -0.04 0.96 -0.04 0.013
Sc 3: (-0.25; 0.50) 0.250 (0.043) 0.000 -0.27 -0.02 0.48 -0.02 0.001
Sc 4: (0.55; 0.45) 0.250 (0.043) 0.000 0.54 -0.01 0.43 -0.02 0.000
Sc 5: (0.7; 0.3) 0.250 (0.043) 0.000 0.69 -0.01 0.29 -0.01 0.000
0.50 Sc 1: (-2.0; 1.5) 0.508 (0.113) 0.008 -2.05 -0.05 1.47 -0.03 0.069
Sc 2: (-1; 1) 0.497 (0.054) -0.003 -1.01 -0.01 0.98 -0.02 0.013
Sc 3: (-0.25; 0.50) 0.498 (0.049) -0.002 -0.26 -0.01 0.49 -0.01 0.001
Sc 4: (0.55; 0.45) 0.498 (0.049) -0.002 0.54 -0.01 0.45 0.00 0.000
Sc 5: (0.7; 0.3) 0.499 (0.049) -0.001 0.69 -0.01 0.30 0.00 0.000
0.75 Sc 1: (-2.0; 1.5) 0.764 (0.115) 0.014 -2.07 -0.07 1.48 -0.02 0.081
Sc 2: (-1; 1) 0.750 (0.051) 0.000 -1.03 -0.03 0.99 -0.01 0.014
Sc 3: (-0.25; 0.50) 0.750 (0.044) 0.000 -0.27 -0.02 0.50 0.00 0.001
Sc 4: (0.55; 0.45) 0.751 (0.044) 0.001 0.54 -0.01 0.45 0.00 0.000
Sc 5: (0.7; 0.3) 0.751 (0.044) 0.001 0.69 -0.01 0.30 0.00 0.000

N = 1000 cases
π (μ; σ)
0.10 Sc 1: (-2.0; 1.5) 0.104 (0.022) 0.004 -2.07 -0.07 1.50 0.00 0.014
Sc 2: (-1; 1) 0.100 (0.011) 0.000 -1.01 -0.01 0.99 -0.01 0.003
Sc 3: (-0.25; 0.50) 0.101 (0.010) 0.001 -0.26 -0.01 0.50 0.00 0.000
Sc 4: (0.55; 0.45) 0.101 (0.010) 0.001 0.54 -0.01 0.45 0.00 0.000
Sc 5: (0.7; 0.3) 0.101 (0.010) 0.001 0.69 -0.01 0.30 0.00 0.000
0.25 Sc 1: (-2.0; 1.5) 0.249 (0.028) -0.001 -2.01 -0.01 1.48 -0.02 0.016
Sc 2: (-1; 1) 0.248 (0.015) -0.002 -1.01 -0.01 0.99 -0.01 0.004
Sc 3: (-0.25; 0.50) 0.249 (0.014) -0.001 -0.26 -0.01 0.50 0.00 0.000
Sc 4: (0.55; 0.45) 0.250 (0.014) 0.000 0.54 -0.01 0.45 0.00 0.000
Sc 5: (0.7; 0.3) 0.250 (0.014) 0.000 0.69 -0.01 0.30 0.00 0.000
0.50 Sc 1: (-2.0; 1.5) 0.496 (0.031) -0.004 -2.00 0.00 1.48 -0.02 0.019
Sc 2: (-1; 1) 0.498 (0.019) -0.002 -1.01 -0.01 0.99 -0.01 0.004
Sc 3: (-0.25; 0.50) 0.500 (0.017) 0.000 -0.26 -0.01 0.50 0.00 0.000
Sc 4: (0.55; 0.45) 0.500 (0.017) 0.000 0.54 -0.01 0.45 0.00 0.000
Sc 5: (0.7; 0.3) 0.500 (0.017) 0.000 0.69 -0.01 0.30 0.00 0.000
0.75 Sc 1: (-2.0; 1.5) 0.744 (0.033) -0.006 -2.00 0.00 1.48 -0.02 0.023
Sc 2: (-1; 1) 0.748 (0.016) -0.002 -1.01 -0.01 1.00 0.00 0.005
Sc 3: (-0.25; 0.50) 0.750 (0.014) 0.000 -0.26 -0.01 0.50 0.00 0.000
Sc 4: (0.55; 0.45) 0.750 (0.014) 0.000 0.54 -0.01 0.45 0.00 0.000
Sc 5: (0.7; 0.3) 0.750 (0.014) 0.000 0.69 -0.01 0.30 0.00 0.000

Data are generated with an average number of mutations per cases ≈34, to correspond to the LCIS study.

Number of loci = 19,000; 1000 simulations per scenario.