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observational study
A study that draws conclusions on the effects of factors or treatments by observing a group of subjects over a period of time.
Notes:
- the hierachy of evidence for observational studies is:
- case series < case control study < cohort study < meta-analysis of cohort studies
Specific
case series
case-control study
cohort study
cross-over study
cross-sectional population study
longitudinal population study
meta-analysis
Study of Osteoporotic Fractures (SOF)
General
scientific investigation
References
- Medical Knowledge Self Assessment Program (MKSAP) 16, 17.
American College of Physicians, Philadelphia 2012, 2015