How can we prevent self selection bias

They can be prevented by:Using standard measurement instruments e.g.There are two strategies to reduce the selection bias, and they are as:.To the extent that respondents' propensity for.Randomizing selection of beneficiaries into treatment and control groups, for example, ensures that the two groups are comparable in terms of observable and unobservable characteristics.If a person is interested in reducing his bias he should simply follow socrates' words unexamined life is not worth living..

Bias can be introduced by the methods used to select a population of interest, to identify and sample a source of such patients, to recruit and retain those patients, and to disseminate the results.If we are not well aware of our biases (beliefs+preferences), then they will guide what we select to observe and what we select and call facts in our reasoning …and even when+how+why we use the tool of reasoning.4 observational studies are prone to bias with respect to selection of sources of exposed and unexposed patients, or cases and.Collect basic demographic information from.