@Bibliothecaris Something that strikes me as odd is that the study references other studies based on self-reported involvement in accidents, but does not seem to consider whether reporting bias could have played a role in this.
Since ADHD often co-occurs with autism (at least according to institutional classifications), and autistic people are generally known to be more likely to speak honestly about matters (and therefore may be less likely to obscure their involvement in an accident), that seems like a pretty important factor to look at?
@joepie91 @Bibliothecaris also even if you are diagnosed, mistime your meds and get caught up in a DUI control (which happen randomly every so often), its completely at the whim of a police officer whether they accept you have a prescription or treat it as a potential drug driving incident. You would be likely not to be charged but still have to endure arrest, blood test etc and waiting maybe a year on bail to know what the results were..
@joepie91 @Bibliothecaris this is exactly why I don't get formally diagnosed (in UK), as although UK has currently stepped back from going this far, it was certainly considered a few years ago and might crop up again (declarable/notifiable medical conditions result in a loading on car insurance premiums, and mean your licence could even be suspended whilst waiting for medical reports that can take months/years)