Selection bias - Open Access .click

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1987
The problem of selection bias in economic and social statistics arises when a rule other than simple random sampling is used to sample the underlying population that is the object of interest. The distorted representation of a true population as a consequence of a sampling rule is the essence of the selection problem.
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Wage Comparisons--A Selectivity Bias [PDF]

Journal of Political Economy, 1974
The economics of information have been established by now as an integral part of economic analysis. However, surprisingly little has been written on the implications of search (and in particular, job search) for the estimation of the wage function and its ramifications in such cases as the estimation of the determinants of labor force participation ...
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Selection bias versus allocation bias

BMJ, 2013
The effectiveness of supported self management in reducing hospital readmissions and death in patients with chronic obstructive pulmonary disease was evaluated.1 Researchers performed a randomised controlled trial. The intervention consisted of training patients to detect and treat exacerbations promptly, with ongoing support for 12 months. Patients in
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Selection Bias