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I am always on the lookout for interesting medical data sets that I can use for teaching and the other day, quite by accident, I came across “Google flu trends”. This is an internet project operated by Google that estimates the numbers of cases of influenza each week in 25 different countries. The records go back to […]
Every few weeks I try to find an hour or so to browse through the latest issues of the main statistics journals. This gives me the opportunity to read papers on topics that I know relatively little about; it is my way of keeping up to date with new developments beyond my day to day work on genetic epidemiology. Of course, it is only possible […]
This week I am going to complete the discussion of Bayesian sample size calculation for a simple clinical trial. Here is the problem, a trial is to compare a corticosteroid cream with a placebo for patients with eczema on their hand. The measurement of response will be the patient’s rating of the severity of their eczema on a […]
Last time I started to discuss Bayesian experiment design and to illustrate that discussion I presented a simple clinical trial comparing a corticosteroid cream with a placebo for patients with eczema. The measurement of response was to be the patient’s rating of the severity of their eczema on a 0-10 visual analogue scale (VAS). Patients would […]