Learn how to apply the rest of the exclusions to the data set, including removing records without values in the exposure and outcome variables.
- [Instructor] So let's review who we are removing.…In our last section we removed everyone…who was not in our subpopulation,…meaning everyone who was not a veteran, done.…But now in this section we need to remove everyone…who does not have a valid value for the exposure…or the outcomes we selected.…So literally, what we are going to do…is remove every survey where there is not…a valid alcohol drinking variable.…That's the exposure.…And then, for the two outcomes we are looking at,…sleep duration and asthma status we have to remove records…without valid values for those too.…
Each time we remove these rows…we need to document them in our data reduction spreadsheet…so we don't forget those numbers.…So I'll show you that.…Finally, I'll review the code we used.…Let's start by removing people…who do not have a valid value for our exposure,…which is drinking alcohol.…Let's look in our data dictionary…to see who we want to remove from the data set.…So here is the ALCDAY5 tab…and let's review what we want to keep…and what we want to get rid of.…
This detailed, practical course is designed to help those in the field of public health, medicine, and data science to edit, analyze, and interpret data. Learn how to code new variables, use the forward-stepwise modeling process, and document your decisions. Find out how to visualize results by generating charts and graphics, and how to add tables and figures to your documentation. This course helps equip you to independently design, develop, and execute a full BRFSS analysis, and even publish your results in scientific publications or journals.
- Reviewing survey data and documentation
- Conducting a BRFSS analysis
- Understanding naming conventions
- Editing variables
- Reviewing distributions
- Generating an analytic dataset
- Developing descriptive statistics to answer prespecified hypotheses
- Preparing publication-worthy tables and plots
Skill Level Advanced
1. What Is the BRFSS?
2. Designing Your Metadata
3. Reading in Data and Applying Exclusions
4. Preparing for Descriptive Analysis
5. Conducting Descriptive Analysis
Making a frequency macro4m 8s
6. Descriptive Analysis: Weights and Tests
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