Screening for OSA in the General Population?

There is an interest in screening for sleep apnea, which interferes with people's quality of life and can have these more severe health outcomes associated with it. What parts of the process of screening are we really lacking evidence that allowed the task force to make a recommendation? Is it that we don't know how to screen for it? Or that if we find people, we don't knows how to intervene in order to change the ultimate outcomes,. where are the gaps in evidence?