[Menge]

> (2.07 general population vs 1.27 for males without one of those issues)

Since substance misuse and the other disorders influence mortality rates of the ADHD population, it is not surprising that they affect mortality in the general population.

For the inference you seem to be making, I think you would need the mortality rate of males with no ADHD AND no substance misuse/etc. Based on the data given, I see no reason to think that is above 1.27.