[Snoooze]

> Linear-regression estimates show gene name errors in supplementary files have increased at an annual rate of 15 % over the past five years, outpacing the increase in published papers (3.8 % per year).

This still doesn't actually tell us if the problem is getting worse. Or if it does it is badly worded. Even assuming this 3.8% is derived from their own data, you need the number of papers published that contain genelists (I would imagine this has probably risen faster than the number of papers overall).

In other words, the authors should have plotted the error rate over time rather than the number of errors over time.