PR2 W3-W4 Flashcards
examines the effects of an intervention on an outcome of interest
Intervention research
the goal is to prevent a negative outcome from occurring
Prevention research
the goal is often to support specific tenets of
theoretical paradigms.
Classic laboratory experimentation
look at the relationships between risk factors or characteristics of patients and their likelihood of getting a particular disease
analytical observational studies
two types of intervention studies
- randomized controlled trials
- non-randomized or quasi-experimental trials
is considered to be the gold standard of clinical research because it is the only known way to avoid selection and confounding biases
Randomized controlled trial
4 steps to collect high-quality data that is relevant to your purposes
Define the aim of your research
Choose your data collection method
Plan your data collection procedure
Collect the data
is the science of collecting, organizing, presenting, analyzing, and interpreting data to assist in making more effective decisions, especially in the context of quantitative research
statistics
two categories of statistics
Descriptive Statistics
Inferential Statistics
this statistics methods of organizing, summarizing, and presenting data in an informative way
e.g. via various charts, tables, and infographics
Descriptive Statistics
this statistics The methods used to estimate a property of a population on the basis of a
sample e.g. T-Test, Z-Test, ANOVA, Regression Analysis, Factor Analysis, Cluster Analysis
Inferential Statistics
is the most commonly used measure of central tendency
mean
is the value that occurs most frequently
mode
is the middle value when the data are arranged in
ascending or descending order
median
Measures of Variability:
Range, Variance, Standard Deviation, Coefficient of Variation
measures the spread of the data
range
The difference between the mean and an observed value is called the deviation from
the mean
variance
square root of the variance
Standard Deviation
is the ratio of the standard deviation to the mean expressed as
percentage, and it is a unitless measure of relative variability
Coefficient of variation
is simply a statement that something is true.
hypothesis
is a procedure in making decisions based on a sample evidence or probability theory used
to determine whether the hypothesis is accepted or rejected
hypothesis testing
