Comments of an Epidemiologist

• Reference

• 1 McPherson K.. 1974; Statistics: the problem of examining accumulating data more than once.. New Engl. J. Med. 291: 501.
• 2 White S.J., and Freedman L.S.. 1978; Allocation of patients to treatment groups in a controlled clinical study.. Brit. J. Cancer 37: 849.
• 3 Snedecor G.W., and Cochran W.G.. 1967. Statistical Methods.. Iowa State University Press; Iowa.:
• 4 Armitage P.. 1971. Statistical Methods in Medical Research.. Blackwell; Oxford.: