Sentence examples for trial selection bias from inspiring English sources
The longitudinal registry design resembles a "real world" setting without the typical clinical trial selection bias.
Neither the meta-regression nor the funnel plots showed that this resulted in trial selection bias.
Thus, without invoking trial selection bias, the requirement for our decision aids to operate in the consultation may limit their exposure to non-adherent patients.
(1c) Systematic differences between comparison groups (possible selection bias, NICE 'methodology checklist') In a non-randomised trial, selection bias can occur because of the lack of a random allocation sequence and concealed allocation.
In cluster trials selection bias can also be introduced through participant recruitment.
This has consequences for randomised trials: selection bias must be controlled as older patients are underrepresented in clinical trials and are at risk for higher mortality rates.
18 However, in cluster randomised trials, selection bias is theoretically possible, either through systematic differences between practices in the control and intervention groups, or because of similar differences at the individual level.
In cluster-randomised trials, selection bias is theoretically possible, either through systematic differences between practices in the control and intervention groups, or through similar differences at the individual level [ 28].
First, its database was that of a prospective clinical trial without selection bias, which should minimise confounders for the detection of AA and AN.
The methodology used in this trial will overcome concerns from previous trials of selection bias and relevance to the UK health service.
Table 3 shows consistent components of risk of bias across the trials, including performance and detection bias due to inadequate blinding in all of the trials, and selection bias due to a lack of transparency regarding sequence generation in most trials [12,51,52,55,56] and of allocation concealment in all trials.
