Drug Lit

plan for selecting study participants and for obtaining data about them

orderly approach to research  (a roadmap)

descriptive and analytic

• studies that describe something
• undertaken without a specific hypothesis
• done on new disease to characterize it
• hypothesis generating

• situdes to test 1 or more specific hypothesis
• usually about exposure influences on disease risk 

• case report
• case series
• descriptive study based on rates

randomized- clinical trials (gold standard)

• non randomized:
• cross-sectional study
• case control study
• cohort study 

participants are observed

one or more groups of pt are observed and characteristics about the pt are observed

no intervention or manipulation

an investogator, some change occurs

controlled maneuver such as a drug, procedure or treatment