Quant Methods Flashcards
Descriptive
To describe variables in current state
Create snapshot of current state affairs
Gain understanding of study population
Mode
Most frequently ocurring nmberMe
Median
Middle score
Range
Distance bw highest and lowest value
Correlation
To measure and describe the relationship bw two or more variables without attempting to explain the cause of relationships
Correlation descriptive studies aere done when an intervention cannot be implemented because of ethics
smoking …
abuse …
Downfall of correlational
Cannot use true randomized control trial, therefore, is not as sure for predicting conclusions
three non experimental types of studys
Case control
Case Control
Compare people with specific disease compared to people without a disease
Determines whether exposure to something can increase the likelihood of a person to develop this disease
Odds ratio - measuring association bw exposure and outcome
Can only measure one disease at a time
Not useful for rare exposure/diseases
Cross-sectional
Non experimental design
Gathers data from subjects at one point in time
Written as PIO
Measure exposure and outcomes as each exists in a population at one specific point in time
Can be used to explain current exposures and diseases of a population
Efficient and cheap
Cannot be sure if exposure occurred before or after the disease
Cohort study
Purely observational studies of a secelcted or target group mesrue ing selected variables over time
Measures multiple exposures, multiple outcomes
Can measure rare exposures
Over long period of time, determine if exposure preceded disease
Expenseive, time consuming, large sample sizes, lose participants
Data alayisis
First
Samples are analyzed using descriptive statistics
Second
If appropriate inferential statics will be used
Types of inferential statics
Odds ratio
P-value
