Study types Flashcards
A study using a random process to determine an artificially manipulated exposure of study subjects
Experimental
Evaluation study using artificially manipulated study factor by the investigatory
Quasi-experimental
An analytical study where the sampling is based on the outcome status
Case-control
An analytical study where sampling is based on the exposure status
Cohort
The exposure and outcome status is determined at the same time
Cross-sectional
The unit of analysis is the group
Ecological
A descriptive study with no comparison group
Case Series/Case Report
Type of study-
Primary objective is to study frequency and distribution of health status. Often used for hypothesis generation. What is one example?
Descriptive studies
Examples. Case Series, Ecologic, Cross-sectional
Type of study-
Used in testing hypothesis to investigate associations between exposure to a risk factor and a health outcome. What is one example?
Analytical studies
Examples. Cohort, Case-Control, Experimental
Which study compares changes across different time periods within the same geographical area?
Ecological trend study
Which study compares exposure and disease rates in different geographical areas?
Ecological Comparison Studies
Which study describes a single case with interesting findings?
Case Report Study
Which study describes a small group of cases with similar diagnoses?
Case series study
Describes the phenomena where the conclusions obtained from an ecological study may be the reverse of those from a study that collects data on the individuals.
Ecologic Fallacy
T/F
Ecologic studies are good for making comparisons when within-group variability is low.
TRUE
