alt Hacker NewsWhat should I look at for such evidence? If something is highly regulated and controlled then things would be quite different from today, not sure there wouldn't be reports of failures of containment, for example, if they are mandated including any rquired monitoring.
There's a perfect example of "highly regulated and controlled industries" in which people no longer self-report: aviation.
Pilots do not (or no longer) self-report mental illness at the same frequency because it effectively destroys their lives and career. One paper of many describing this phenomenon: https://pmc.ncbi.nlm.nih.gov/articles/PMC11302551/
An article, one of many: https://www.reuters.com/investigations/if-you-arent-lying-yo...
If you have any pilot friends in commercial aviation, you can just talk to them as well.