WEEK 2 Scientific Method / Advertising Health Products (C2/3) Flashcards
(39 cards)
Cross Sectional Research Design
This is a study of a group of people at a given point in time. It could be carried out by administering a survey on a particular date in a given year
Retrospective Research Design
This is a study involving past records of a group or groups over a long period of time (years) to assess risk factors of a disease such as lung cancer
Prospective Research Design
This could involve studying a group over a long period of time (years) to assess risk for getting a disease sometime in the future such as diseases as a result of smoking cigarettes
Longitudinal Research Design
This is a study of the same individuals (cohort group) over a long period of time on the same health variables and risk factors
Descriptive Design
may include surveys (quantitative) or qualitative studies. Surveys are used to obtain information about health behaviors or other topics by asking groups of individuals to complete a pen and pencil, computer, Internet, telephone or person-to-person set of questions
Analytical Studies
are quantitative and are classified as observational, experimental, and quasi-experimental type studies
Observational Studies
assess a hypothesis and are conducted by using cohort groups, cross-sectional groups and case-control studies
Experimental Studies
involve randomly selecting subjects and then randomly assigning them into either a treatment or a control (comparison) group
Quasi-expiremental studies
involve comparison groups that are not randomly selected, and many factors may cloud (or confound) the findings. Confounding factors (variables) may relate to both the cause and effect or outcome
Correlation studies
are used to assess the relationship of one or more variables to one or more other variables
Prediction Statistics
also called inference studies, assess the cause and effect of variables
Example: team of researchers want to assess if college students who eat their meals on campus at dining halls offering healthy food choices will at some point in time have gained less weight
Epidemiological Studies
analyze data from various population groups over a point in time or for years
Characteristics of Scientific Testing
- self correcting research characteristics
- objectivity
- findings must be made public
- experiments must be reproducible by other scientists
- experiments must be empirical
- science should be predictive
what does objectivity mean
- Findings must be derived from a biased research, means that there should not be any bias based on the researchers personal beliefs, perceptions, values or emotions
- Hypothesis, research questions, quantitative, qualitative research
Evidence Based Research
especially important for clinical practices whether it is medicine, nursing, psychology, speech language and hearing or the many alternative practices offered today
- Means that the study evidence or result is integrated with clinical expertise and patient values when making decisions about patient care
Primary goals: integration of best research practice, interests and values of patient and clinical skills
Bridge Theory
suggests there is a gap between the research results and the application of that research to effect a positive change or growth within the environment of professionals involved in a particular practice
4 components of the bridge theory
- Framing the clinical question
- Finding the evidence
- Assessing the evidence
- Making clinical decision
Steps to the Scientific Method
- ask a question
- research your topic (journals, lit review)
- make hypothesis
- test hypothesis with an experiment
- is the experiment working?
a. no: try to fix problem
b. yes: - analyze the data and draw conclusions
a. Results don’t align with hypothesis: that’s okay, the experiment can be used a research for nee projects (ask new questions, form new hypothesis)
b. Results do align with hypothesis: - Communicate results
Qualitative Research Design
Purpose: Answer the why question
Date type: Observation, symbol, word, etc,
Approach: Observe and interpret
Analysis: Grouping of common date/non stats analysis
Quantitative Research Design
Purpose: Answer how many/much
Data type: number/statistical result
Approach: measure and test
Analysis: statistical analysis
Challenges facing science
- media
- gouverment funds a lot of science
- companies and cooperations fund science
- less trust in science
- A large proportion of published studies are of poor quality
- Many conducted studies are never published
- controversial issues
- Large proportion of studies are redundant
what does redundancy mean
replication, meaning it has been done over and over again
Goalism
considers all variables but not ideally how you want to prove a theory in a scientific fashion
ways to determine if products online are scientifically tested
- Go on website and look through the material, see if there are publications related to his method
- Reviews from customers
○ Issue: Some people wont point it out because they don’t want to feel de frauded
○ Fake bad/fake good reviews