PHC 6001 Exam 2 With Complete Solutions 2024!!

PHC 6001 Exam 2 With Complete Solutions 2024!!

Two Types of Epidemiological Studies - - Analytical & Descriptive


descriptive studies - - use existing data that is routinely collected


-Look for disease trends in populations


-Case reports & series


Once a hypothesis is made, it should be tested with _____________ studies. - -

analytical


analytical studies - - hypothesis-driven


Look for an association b/w exposure/risk factor


-test an intervention


What 4 things determine your study design? - - 1. Hypothesis


2. Type of study


3. Independent Variable


4. Dependent Variable


What are the 2 types of analytical studies? - - 1. experimental = RTC


2. observational = case-control; cohort studies; ecologic; cross-sectional

, Observational Study - - a study based on data in which no manipulation of factors

has been employed


What are the 3 types of cohort studies? - - Prospective


Retrospective


Ambidirectional


What differentiates the type of cohort studies? - - Timing


Exposure (1995) -> Study Begins (1996) -> Outcome is Measured (1996 - 2006) - -

Prospective


Exposure (1995) -> Outcome Occurs (1996 - 2006) -> Study Begins; Exposure and outcome

are measured (2007) - - Retrospective


Exposure (1995) -> Outcome Occurs (1996 - 2000) -> Study Begins; Exposure and outcome

are measured (2000) -> Outcomes continue to be measured (2000 to 2006) - -

Ambidirectional


Ambidirectional Cohort Study - - A cohort study that has both prospective and

retrospective components.


What is considered the best observational study? - - Cohort study


Experimental Studies - - • Best for gaining knowledge about preventing or treating

disease