This is the second talk I gave in Brazil, in October 2013, in occasion of the V Seminar on Technology Management and Innovation in Health, where epidemiologist Mauricio Barreto organised a round table on Evaluation of Health Impact of Technological Interventions. There, I presented work on EBM and evidence hierarchies (output of a joint project with Phyllis Illari, Brendan Clarke, Donald Gillies, Jon Williamson).

By the way, if you are interested, we also set up a blog, called EBM+!

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