Hi, I'm doing basic analysis on a national survey but would like to combine responses to a question and was wondering if I can report a confidence interval for the combine value. Specifically, I gave many choices for when a speech pathologist begins treating a patient with neck cancer. I have percentages and confidence intervals for each response choice, "I begin 3 months before radiation therapy" and "1 month before", but I want to combine the two and just report how many begin before radiation, regardless of how long before. Can I do this, or does the fact that they selected specific choices not let me do confidence intervals on them. Any help would be appreciated. Thanks so much!