Here’s an interesting problem with data analysis in general, and so, by extension, data journalism: you have to be careful about assuming that the numbers you’ve got access to… really do reflect the underlying phenomena you’re trying to investigate.
Today’s Guardian has a story, “Antidepressant use in England soars“. It’s much more overstated in the Independent. They identify that the number of individual prescriptions written for antidepressant drugs has risen, and then assumes this means that more people are depressed. But while that’s a tempting assumption, it’s not a safe one. Read the rest of this entry »