Should people who were given propofol be allowed to drive home? Are men drivers better or worse than women? Some ghastly chemistry poetry, and one of the funniest YouTube videos ever. Oh, to answer the original question: it's impossible to tell from this study. Here's why.
An ordinary (or worse) study sets out to rehash the same nonsense about how deadly prescription opioids are. In addition, it ends up botching the conclusion to appear that it's contradicting itself. This is seriously strange.
A well-publicized paper on suicide rates by occupation might have produced faulty data. A re-analysis is underway, with the Centers for Disease Control and Prevention taking action.