interesting discussion. I suggest when there is a key number in these calculations like OTD rates – try to come up with several sources/way to compute it. Don’t trust one source that might be biased, but don’t dismiss it either.
for OTD rate – what is distribution by age? I resume teens, early 20s would be the time. If boys get married older, they might have more time to go OTD before marriage .. this might be a “good thing” preventing a family tragedy later or a good thing, preventing the OTD from happening.