Gordis, Leon,  1934- <br/><br/>
Epidemiology / 
Leon Gordis. 
 - 4th ed. 
 - Philadelphia :  Elsevier/Saunders,  c2009. 
 - xv, 375 p. :  ill. (chiefly col.), maps (chiefly col.) ;  26 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/>Introduction -- The dynamics of disease transmission -- Measuring the occurrence of disease: I. Morbidity -- Measuring the occurrence of disease: II. Mortality -- Assessing the validity and reliability of diagnostic and screening tests -- The natural history of disease: ways of expressing prognosis -- Assessing the efficacy of preventive and therapeutic measures: randomized trials -- Randomized trials: some further issues -- Cohort studies -- Case-control studies and other study designs -- Estimating risk: is there an association? -- More on risk: estimating the potential for prevention -- A pause for review: comparing cohort and case-control studies -- From association to causation: deriving inferences from epidemiologic studies -- More on causal inferences: bias, confounding, and interaction -- Identifying the roles of genetic and environmental factors in disease causation -- Using epidemiology to evaluate health services -- The epidemiologic approach to evaluating screening programs -- Epidemiology and public policy -- Ethical and professional issues in epidemiology. 
<br/><br/><label>ISBN: </label>9781416040026 1416040021 
<br/><br/><label>LCCN: </label>2007030111 
<br/><br/><label>Nat. Bib. No.: </label>GBA854588  bnb 
<br/><br/><label>Nat. Bib. Agency Control No.: </label>101312414  DNLM 014584162  Uk 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Epidemiology.<br/>Epidemiology.<br/>Epidemiologic Methods.
<br/><br/><label>LC Class. No.: </label>RA651  / .G58 2009 
<br/><br/><label>Dewey Class. No.: </label>WA 105 
<br/><br/><label>National Library of Medicine Call No.: </label>WA 105  / G661e 2009