- Pick out your outcome - and find a buddy (10 min)
- Quick Talk about EDA (5-10 min) a) Real world examples b) Why we do it
- Introduce the Shiny Interface (10 minutes) a) Have the NHANES data in spreadsheet form b) Overview - How many patients in our dataset? c) Categorical (factor = category) d) Continuous
- Quick Answer questions - Depression
- How many missing values are there for Depression?
- How many people in the dataset have the "most" number of Depressive Episodes?
- Do the
Race1
andRace3
categories overlap? What is the relationship ofRace3
toSurveyYr
? - Is there something strange about
Age
? - Is number of sleep hours associated with depression?
- Is marijuana use associated with depression?
- What about sleep trouble?
- How is sleep trouble and marijuana use related?
- Quick Answer questions - Physical Activity (See app https://minnier.shinyapps.io/nhanes_explore_physactive/)
- What is the percent missing for
PhysActive
(yes/no physically active)? - What are the characteristics of people who have missing responses for
PhysActive
? - How does missingness and responses in
PhysActive
relate to responses and missingness inPhysActiveDays
and PhysActiveDaysAtLeast3? How does the proportion of missingness inPhysActiveDaysAtLeast3
(yes =PhysActiveDays
>= 3, no < 3) relate toPhysActive
response? Is this what you would expect? - Is there something strange about
Age
? - What is the median and interquartile range of
PhysActiveDays
? - Is number of sleep hours associated with physical activity? Consider using the categorized variable
SleepHrsNightCat
. - What about levels of education?
- What about BMI? Is the association of BMI with physical activity dependent on which measure of activity you use --
PhysActive
(yes/no) orPhysActiveDaysAtLeast3
? - Are there other covariates you expect to be associated with physical activity? How do they relate to each other?
- What is the percent missing for
- Conclusions
- What are the strongest associations with your outcome of choice?
- Are any of the covariates associated with each other?
- Are the associations what you expected?
- Sampled structure of NHANES