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Failure to assess for ascertainmentbias increases the risk of false genetic associations.
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Background: The effect of mutations on phenotype is often overestimated because of ascertainmentbias.
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Case ascertainmentbias from targeted PHPT screening in patients being evaluated for osteoporosis is the most likely explanation.
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The pedigrees were influenced by incomplete ascertainmentbias, which was reduced by omitting the affected probands from the analysis.
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High-throughput shotgun sequence data make it possible in principle to accurately estimate population genetic parameters without confounding by SNP ascertainmentbias.
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The combined approach results in more robust reconstructions and can protect against samplingbias.
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Sensitivity analyses showed that the conclusions are robust to samplingbias and other issues.
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The obvious source of samplingbias there is that people desperately want to get tested.
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Unilateral loading activities such as tennis or squash provide a direct comparison of skeletal response without samplingbias or genetic confounding.
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They corrected for samplingbias by only considering four formations in the northwestern interior that each included more than 100 specimens.
Usage of biased sample in English
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The suggestion - predictably from a thoroughly biasedsample - was Dublin.
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It's only fair to say that the 195 people who answered the questionnaire are a biasedsample.
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Obviously working in the media is a biasedsample, journalists are encouraged to tweet, post or forward funny and unusual material.
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Oh, people can always reel off lists of famous homosexual geniuses, but that's a biasedsample; of course we've only heard of the successes.
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Previous studies of the prevalence of sleep problems in adults with intellectual disabilities (ID) are affected by small, potentially biasedsamples and other limitations.