St George's Hospital Medical School provides an on-line guide to the statistical content required in grant applications and this is effectively a good practice guide for planning the analysis of different types of medical research.

The British Medical Journal provides a free online text book on statistics.

The HyperStat on-line text book on statistics covers basic statistical principles from deBive statistics through to simple analysis of variance, with book reviews and many links to other sites of interest.

The RDDirect website also has a section on statistics which links to a number of resources including various calculators and tools to assist with statistical analysis, power analysis and randomisation.

The American Statistical Association biographies of statisticians.

Some SPSS Materials including details on mailing lists, the product and company, online guides and tutorials and reviews of a couple of printed books.

My Stata Resources.  Downloadable 'ado' files implementing new procedures in Stata.

The Royal Statistical Society is the main statistical organisation in the UK, with power to grant royal charters to qualified members.

AllStat is the mailing list of the Royal Statistical Society.  A useful list from which to seek comment on technical issues and for notification of conferences and jobs.

SPSSX-LIST is the mailing list of the SPSS user group.  Mainly questions and answers about SPSS (no surprise there, then!).

MedStats is an independent mailing list specifically for medical statisticians.  Permits exchanges of views within the forum rather than just posting of questions and then respond to poster.

http://www.stattransfer.com/lists.html: a web based list of statistical mailing lists.

... and online accessibility

• Biometrica (abstracts and contents lists).
• Biostatistics (abstracts and contents lists).
• Clinical Trials (abstracts and contents lists).
• Journal of Epidemiology and Biostatistics" (abstracts and contents lists).
• Pharmaceutical Statistics (abstracts and contents lists).
• Statistical Methods in Medical Research (abstracts and contents lists).
• Statistics in Medicine (abstracts and contents lists).
• Statistics Education Research Journal (full text available).
• Journal of Articles in Support of the Null Hypothesis (full text available online and no, it's not a spoof!)

The British Medical Journal: Statistics Notes provide a great introduction to specific statistical tests and methods.  Good for beginners, improvers, and for statisticians to give to non-statisticians who need to be educated!

http://www.missingdata.org.uk/ provides some useful information on methods of missing data analysis.

http://www.statsnetbase.com/, a site for Chapman and Hall/CRC, publishers of statistics texts.

London School of Hygiene and Tropical Medicine: Medical Statistics Unit

University College London Hospitals: Medical Statistics Unit

University of Edinburgh: Medical Statistics Unit

Lancaster University: Medical Statistics Unit

University of Liverpool: Centre for Medical Statistics and Health Evaluation

University of Cambridge: Centre for Applied Medical Statistics