11.07.2015 Views

Clinical Trials

Clinical Trials

Clinical Trials

SHOW MORE
SHOW LESS
  • No tags were found...

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

■■❚❙❘Chapter 19Comparison of MeansDuolao Wang, Felicity Clemens,and Tim ClaytonData on efficacy and safety in clinical trials often take the formof continuous (or quantitative or numerical) variables. They areusually summarized descriptively by statistics such as numberof observations, mean or median, and standard deviation orrange by treatment groups, and by graphics such as histograms,box plots, and dot plots. In this chapter, we describe statisticalmethods for evaluating treatment effects for a quantitativelymeasured outcome using hypothesis testing and confidenceintervals, and demonstrate their uses and interpretationsthrough examples.197

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!