Data Science

You may have encountered the need to import data from different sources into Stata. In this blog...

In this blog post, I will show you how to create three-level ordinal variables (low, medium, and...

In data analysis projects, especially when working with large datasets from various sources, variable names can often...

Cox, N. J. (2010). Speaking stata: finding variables. The Stata Journal, 10(2), 281-296. The findname command in STATA is...

Data preparation is often said to occupy 80% of the data analysis process. Ensuring that your data...

One way to explore missing data and create an analytic sample using Stata is to use the...

Scales are composite measures that combine multiple items or questions into a single score. They are often...

One of the common tasks in data cleaning is to create new variables from existing ones, such...

Steps to Creating Variables 1. First, investigate the existing data. Check the codebook or fre. The codebook...

Why do we need to label variables and values? Let’s see the example from STATA data browser:...

First, you can see the list of variables in the data in the variable browser on the...

When we use a questionnaire to measure a concept that is not directly observable, such as quality...

Different methods of Inter-rater reliability Inter-rater reliability is used to assess the degree to which different raters...

One of the best ways to improve your programming/coding skills is by practicing with replication code. Luckily,...