Online statistical texts
Online statistics notes by G David Garson at North Carolina State University.
InStat at GraphPad Software's website. InStat is basic, inexpensive statistical software (but we haven't evaluated it), with concise online notes on basic to moderately advanced statistical methods.
VassarStats is an online basic statistical packagee (again unevaluated by us) with some background notes. As analyses involves you typing data into a website, only analyses of small data sets are recommended, but a potentially useful resource nonetheless.
For an overview on Phase I, II and III trials, and the planning of a trial, see the Cancer Research UK clinical trials website.
More detailed information on Phase I, II and III trials may be found at the National Cancer Institute site.
Also see the website of the European Organization for Research and Treatment of Cancer (EORTC).
Reporting of clinical trials and other research studies
Statistical calculators and resources
An excellent index for interactive statistical tools on the web is held at Centre for AstroStatistics