Rates of prostate cancer were compared to those exposed to caloric restriction and those that were not exposed to such deprivation.
I have a list to select from:
Cohort
Cross sectional x
Case series
case control
experimental x
ecological x
Im sure its not ecological, cross sectional, experimental.
Im leaning toward Cohort: group pf people with a common chracateristic (prostate concer?) ...healthy people followed overtime to determine incidence of symptoms...exposed vs. non exposed
Could this be case series? Im not too sure about the definition of a case series design to be honest.
Im certain that it cant be case control either because we are not comparing exposure history to Case AND Controls..
HELP!
Based on the information provided, it appears that the appropriate study design to compare the rates of prostate cancer in individuals exposed to caloric restriction and those not exposed would be a cohort study.
A cohort study is a type of observational study in which a group of individuals with a particular characteristic or exposure (in this case, exposure to caloric restriction) are followed over time to determine the incidence of an outcome (in this case, prostate cancer). In a cohort study, participants are categorized into exposed and non-exposed groups, and their outcomes are measured and compared.
Cross-sectional studies involve data collection at a single time point and do not follow participants over time, so they do not capture the incidence of an outcome.
Case series is a descriptive study design that involves a collection of cases with a similar characteristic or condition, but it does not include a comparison group.
Case-control studies compare individuals with a particular outcome (cases) to individuals without the outcome (controls) and look at differences in exposure history between the groups. However, in this case, you are interested in comparing the rates of prostate cancer based on exposure to caloric restriction, which does not fit the definition of a case-control study.
Experimental studies involve the manipulation of a variable to determine its effect on an outcome. This design does not seem to be applicable in this situation as it would not be ethical or feasible to assign individuals to be exposed or not exposed to caloric restriction.
Based on your analysis, the most appropriate study design would indeed be a cohort study.