Wrong questions from QUIZ Flashcards
Scientists randomly assign subjects to a low or high carbohydrate group and then look at changes in body weight over 3 months. Which item represents the independent variable in this study?
Diet type
Scientists perform a study tracking 10,000 people over a 10-year period. They look at their sugar intake at the beginning of the study and then see who develops diabetes over the study duration. Which term best describes this study?
Cohort study
Scientists perform a study comparing 1000 women with breast cancer to 1000 women without breast cancer. They gather information on the women’s diets and look to see if the women diagnosed with breast cancer had more fat in their diet compared to the women who did not get cancer. Which term best describes this study?
Case-control study
Which term refers to a hypothesis or set of hypotheses for which a large body of high quality evidence has been accumulated?
Theory
Types of scientific research
Observational and interventional
Types of observational research
Descriptive: Case study, survey, historical
Exploratory or epidemiological: Cross sectional, case control, cohort
What is a case study
- Track a single person or group of people
over time - Discuss characteristics of or events that
occur to a single person or group - Primary limitation - may not be
generalizable to larger populations
What is a survey
- Questionnaires or interviews administered
to samples of people
What is a historical research
- Looks at events that happened in the past
and uses it to make inferences about
other times, including the future
Cross sectional
- Variables in a group at a specific point in time
- A cross-section of people
- Most useful for:
- Population-based surveys
- To assess the prevalence of diseases in a
population
Case control
- Determine if exposure to something is
associated with an outcome - Scientists identify people with the outcome
and similar people who don’t have the
outcome
Cohort
Group (cohort) followed over time to
determine association between an exposure
and an outcome or disease
1. Cohort free of outcome or disease
2. Researchers identify exposure or event of
interest
3. Cohort followed over time until disease or
outcome occurs
4. Association between exposure and risk of
outcome assessed
What is the leading contributor to preventable death?
Smoking
How many dimensions of wellness are there?
- The dimensions of wellness are emotional, occupational, physical, social, intellectual, and spiritual. Refer to Lesson 1 for more information.
Which polysaccharide is digested fastest?
Amylopectin
