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Bias in analytic research.
Sackett DL. Sackett DL. J Chronic Dis. 1979;32(1-2):51-63. doi: 10.1016/0021-9681(79)90012-2. J Chronic Dis. 1979. PMID: 447779 No abstract available.
An empirical demonstration of Berkson's bias.
Roberts RS, Spitzer WO, Delmore T, Sackett DL. Roberts RS, et al. Among authors: sackett dl. J Chronic Dis. 1978 Feb;31(2):119-28. doi: 10.1016/0021-9681(78)90097-8. J Chronic Dis. 1978. PMID: 659569 No abstract available.
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