检索结果 - "observational study"

An introduction to medical statistics 由 Bland Martin

书本目录: “...The design of experiments 3. Sampling and observational studies 4. Summarizing data 5. Presenting data 6. ...”

Gordis epidemiology / 由 Celentano, David D.

书本目录: “...Morality and other measures of disease impact -- Assessing the validity and reliability of diagnostic and screening tests -- The natural history of disease: ways of expressing prognosis -- Observational studies -- Cohort studies -- Comparing cohort and case-control studies -- Assessing preventive and therapeutic measures: randomized trials -- Randomized trials: some further issues -- Estimating risk: is there an association? ...”