Further reading
Altman,
D.G. (1991) Practical Statistics for
Medical Research, Chapman and Hall, London.
Brown,
R.A. and Swanson Beck, J. (1994) Medical
Statistics on Personal Computers, BMJ Publishing Group, Plymouth.
Gardner,
M.J. and Altman, D.G. (1989) Statistics
with Confidence, BMJ Publishing Group, London.
Polgar,
S. and Thomas, S.A. (1995) Introduction to
Research in the Health Sciences, Churchill Livingstone, Edinburgh.
Swinscow,
T.D.V (1996) Statistics at Square One, 9th
edn, BMJ Publishing Group, London.