Critical appraisal of epidemiological studies and clinical trials [electronic resource] / J. Mark Elwood. Elwood, J. Mark. Epidemiology. Epidemiology Research. Clinical trials Evaluation. RA652.4 .E483 2007 614.4072 22 Previous ed.: 1998. Includes bibliographical references and index. Description based on print version record. Critical appraisal is now accepted as central to the development of rational health care and evidence-based medicine, by applying it to questions of aetiology, clinical therapy, and health care management. The reader will learn how to assess the strengths and weaknesses of new studies, and how to conduct their own studies. Oxford : Oxford University Press, 2007. 2007. 2007 Text 1 online resource (xiii, 570 p.) : http://dx.doi.org/10.1093/acprof:oso/9780198529552.001.0001 eng