Lecture 9 Flashcards
cohort studies are an ideal study design for what conditions
- natural history of disease
- incidence of disease
- risk factors for disease
- prognosis
for studies that increase the risk of disease ____ studies are the only ethical alternative to studying these factors
- observational studies
the ideal study design to evaluate therapies is _____
why
- RCT
- can reduce and/or eliminate confounding in the study sample
what is described as “a group of people who have something in common when they are first assembled and who are then observed for a period of time to see what happens to them
- cohort
what is an observational study in which a group of people who do not have a condition but who could possibly develop it in the future is assembled
- cohort study
what does an observational study mean
- the investigator does not assign the factors of interest
information about the characteristics of the people in the cohort is gathered at the ____ of the study
- beginning
in a ____ cohort study, the investigator gathers information about the factors of interest (exposures) at the start of the study from the research participants themselves and then follows the cohort over time to see who develops the condition
- prospective
the two basic ways of selecting participants for cohort studies
- select a cohort from the general population or some subset and then measure exposure to the factors of interest in each participant
cohort studies are ideal for measuring ____ because people are followed over time with close attention to disease development
- incidence
another name for the ratio in risks
- relative risk
- risk ratio
cohort studies are a type of ____ study that seek to establish _____
- observational
- statistical association
cohort studies estimate the association between an exposure and a disease by comparing the _____ of disease in those who are exposed to those who are not
- incidence
