Hacker News Reader

I'm sure they did. In fact, I suspect that their actual paper has a control group, and gives us the rates for depressed people not on medication. However, non of that is in the linked article, and general purpose news sites do not have a good track record of accurately reporting on scientific studies.

View on HN

The abstract mentions no control group at all and the only number mentioned was the amount of people on antidepressants who took the survey. Additionally, no claim of statistical relevance was made and all the results are simply reported from the survey.

So likely there is no control group.

Reply on news.ycombinator.com