Table 2.

Comparison of Strategies A and B for Fine Mapping the Founder Mutation Location in 100 Simulated Data Sets With a Hypothethical Mendelian Disorder


LD mapping algorithm

Strategya

Mean(pos)b

Std(pos)c

Mean 95% PI width

RMSEd

Overlape
BLADE A 1.9042 0.0950 0.2194 0.0947 97%
B 1.9064 0.1367 0.1721 0.1361 93%
DHSMap A 1.9094 0.0881 0.1059 0.0882 86%

B
1.9097
0.1292
0.0842
0.1289
70%

a The average of the 100 location estimates in the 100 simulations (true location = 0.88 cM).

b The sample standard deviation of the 100 location estimates.

c The average width of the 95% probability intervals (PIs) in the 100 simulations.

d Root mean square error (RMSE): square root of the average squared differences between the estimated and the true location, i.e., RMSE = [TeX:] \batchmode \documentclass[fleqn,10pt,legalpaper]{article} \usepackage{amssymb} \usepackage{amsfonts} \usepackage{amsmath} \pagestyle{empty} \begin{document} \(\sqrt{(1{/}100){{\sum}_{i=1}^{100}}({\hat{{\theta}}}_{i}-{\theta})^{2}}\) \end{document} , where θ is the ture location and [TeX:] \batchmode \documentclass[fleqn,10pt,legalpaper]{article} \usepackage{amssymb} \usepackage{amsfonts} \usepackage{amsmath} \pagestyle{empty} \begin{document} \({\hat{{\theta}}}_{i}\) \end{document} is the location estimate based on the ith simulated data set.

e The percentage of times (in the 100 simulations) that the 95% PI overlapped with the target region.