They did account for them in the median AFAIK. Which is the number I gave and the most appropriate metric. I don't see any mention of confidence intervals ment

They did account for them in the median AFAIK. Which is the number I gave and the most appropriate metric. I don't see any mention of confidence intervals mentioned in the survey, so what are you talking about? Means and standard deviation are given. But they are mostly useless as the distribution is very skewed. They would be infinite if the "never" people were included of course.