| Literature DB >> 2717608 |
Abstract
It is shown that, under certain assumptions, one can estimate the difference between the effect of a treatment and that of a placebo even when the treatment has been given to all and only those patients who are at risk (as evidenced by a screening examination).Entities:
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Year: 1989 PMID： 2717608 PMCID： PMC287052 DOI： 10.1073/pnas.86.9.3003
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN： 0027-8424 Impact factor: 11.205