Nutrition Basics 100 #2

In Vitro

"In test tube" testing on parts of living organisms ex. Cells

Scientific method

1. Make observations that generate questions 2. Formulate hypotheses to explain events 3. Design studies, perform tests and collect data 4. Analyze data and draw conclusions based on results 5. Share with peers 6. Conduct more research the results which may refute or confirm previous findings

Basic steps of human research

1. Review scientific literature 2. Develop a hypothesis 3.Design study- Double blind study/ Review human subjects 4. Conduct research 5.Analyze dates, draw conclusions, report findings 6. Follow up with more research

Peer Review

Before acceptance for publication research articles undergo critical analysis by peer experts in the field

Retrospective Study

Determines factors that may have contributed to development of disease

Intervention Studies

Experimental Group- Group that receives treatment Control Group- Group that receives placebo

Prospective study

Group of healthy people followed over time to determine characteristics assoc. with the development of disease

Case Control Study

Individuals with health conditions are compared to those with similar characteristics but do not have the condition

Hypothesis

Possible explanation for an observation that guides scientific research

In Vivo

Testing on living organisms Ex. Lab rodents

Epidemiology

The study of : -Disease rates among different pop. groups -Factors assoc. with disease -How diseases are spread 2 Types of study