Unplanned or selective release of parts of research is to be avoided, and where it occurs it must be for statistical rather than policy reasons.
Dylid osgoi unrhyw ryddhau nas cynlluniwyd neu ryddhau dethol ar rannau o ymchwil, a phan mae’n digwydd dylai hynny fod am resymau ystadegol yn hytrach na rhesymau polisi.