@sirgetagrip @David_LKaplan @greg_travis Are there randomized controlled trials?
A lot of real world data is heavily confounded and doesn't say much about the actual TEACHING/FORMAT itself.
@sirgetagrip@David_LKaplan@greg_travis是否有随机对照试验？
许多真实世界的数据非常混乱，并且没有说明实际的教学/格式本身。