When Is a Confirmatory Randomized Clinical Trial Needed?
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چکیده
منابع مشابه
When is a confirmatory randomized clinical trial needed?
Few clinical trials show important advantages for one therapy over another. When one does, a confirmatory trial will help decide whether the observation in the first trial was real. The need to replicate experimental results is fundamental in science. Systematic differences occur across clinical trials for a variety of reasons: differences in patient populations (geographically and over time), ...
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ژورنال
عنوان ژورنال: JNCI Journal of the National Cancer Institute
سال: 1996
ISSN: 0027-8874,1460-2105
DOI: 10.1093/jnci/88.22.1606