Hi,

I have a dataset based on a survey where each individual is given a unique id and has several rows of data. The value for a number of variables, like gender and ethnicity, stays the same for each row for any given individual. Each individual should also have 25 rows of data. Some will have less since they didn't complete the survey connected to the dataset.

My two questions are:
1. How can I tabulate variables by individuals?
2. How can I drop individuals who haven't completed the survey and therefore won't have 25 rows of data?

Thankful for any help.

Jacob