Sentence examples for considerable selection bias from inspiring English sources

Considerable selection bias and a lack of objective measurement of outcomes limit the strength of studies about the elective period [ 29].

Exclusion of those patients might be associated with considerable selection bias toward patients with good exercise capacity and those without AF or ventricular pacing.

This might produce considerable selection bias in that help-seeking youth are more likely to be sampled than those who might be avoidant.

Although the decision to perform the echo investigation was taken on a clinical basis in the sickest patients, and therefore contains a considerable selection bias both in terms of patient selection and timing, some remarkable issues were put forward.

In contrast, studies comparing severe pH1N1 cases with non-severe pH1N1 controls have considerable selection bias and are of less clinical relevance, as rapid, inexpensive, reliable screening tests for pH1N1 are not available.

One study reported objective measures of physical activity; however, the outdated measurement technology (under-heel pressure transducers for measuring footfall) and other methodologic limitations (such as considerable selection bias and lack of adjustment for confounders) of this small-scale study from 1986 limit the transferability of the results.

Comparison of publicly available protein-protein interaction repositories has revealed small, although significant, overlaps and considerable selection and detection bias [ 20, 21].

The low response rate left us with a small sample size and considerable potential for selection bias among study participants: participants may have been more inclined to respond to questionnaires asking about symptoms of distress if they were experiencing such symptoms.

Another weakness was the use of convenience samples and it is likely that the results have considerable selection and responder biases and so cannot give a very accurate picture of the health of lesbians and bisexual women in the West Midlands.

However, even taking this considerable self-selection bias into account, the burden of STIs in the MSM population is still significantly higher than in the heterosexual population.

However, these methods are not without potential selection bias and considerable expense.