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Define goals and objectives for public health interventions:
Goal i.e.: reduce exposure to second-hand tobacco smoke in children
Short-term objective i.e.: at the end of the first year of the program, 50% of the adults in xxx will be aware of messages about the hazards of secondhand tobacco smoke
Long-term objective i.e.: By the end of 2020, reduce by 25% the prevalence of adult smokers in the home. Criteria: SMART
Recognize the complexity of nutritional epidemiology
Diet as a complex expsoure (we all have to eat..), Confounding in nutritional epidemiology, measurement error in nutritional epidemiology, exerimental studies often not feasible (also time-intensive, costly, problems with compliance, blinding difficult), preliminary or unconfirmed findings come to the attention of the media and the general public => no single study can provide a definitive answer and no study design is without limitations".
Mortality: the number of death in a population during a given time or place
current cases (new and preexisting cases)
number of new events/cases in a defined population in a specific period of time
baseline risk for the outcome => Absolut Risk intervention group is divided by the absolute Risk of the control group, is this subtractet from 100% = Relative Risk Reduction
percentage of people with the outcome in a group. Is calculated for the intervention and control group and then compared = Absolute Risk Reduction. This defines the effectivness of an intervention.
(Risk before implicate the interverntion) is important to get to the absolut and the relative risk.