On Biostatistics and Clinical Trials
CQ's web blog on the issues in biostatistics and clinical trials.
Sunday, June 14, 2015
Sample Size and Power Calculation Using SAS Proc Power and twosamplesurvival Statement
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For sample size and power calculations, several commercially available software can be used. The commonly used ones are EAST , PASS , and NQ...
2 comments:
Sunday, June 07, 2015
Some Explanations about Survival Analysis or Time to Event Analysis
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The concept of Survival analysis came from the old days for cancer study where the measurement is the length of the survival or time to deat...
1 comment:
Friday, May 01, 2015
Study Day in Clinical Study Protocol
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Any clinical trial should always have a study protocol. The study protocol will contain a schedule of events table to specify the study visi...
2 comments:
Sunday, April 19, 2015
Hockey stick effect, yo-yo effect, honeymoon effect, halo effect, Hawthorne effect, John Henry effect, and Pygmalion effect
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In clinical trials, people need to pay attention to the various effects in designing the clinical trials. A while ago, I mentioned the hock...
Wednesday, April 01, 2015
Standardized MedDRA Queries (SMQs) and Standardized Drug Groupings (SDGs)
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Clinical trial data collection usually includes the collection of adverse events, concomitant medications, and medical histories. The data i...
4 comments:
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