There is a large group of people reporting no sex, but:
The 1 in 3 figure applies mainly to young men and a 1‑year period.
For the general adult population, the number is closer to 1 in 5 for a 1‑year period.
Data specifically about two years is less commonly reported, but it would likely be somewhat higher than the one‑year numbers—just not clearly documented as “1 in 3.”


