Bro as I must do so often with you libs, the time has come to inform you that words have meaning. If you can’t point to any mention of the existence of a control group in the very study your referencing, then it sure seems likely that it makes no reference to the existence of a control group. One would expect it to be mentioned in an academic/sort of scientific “study” of there has been one.
Accordingly, it’s not a “lie” to say there’s no control group. Even if there had been a control group, it wouldn’t have been a lie since the lack of any such reference does suggest that it didn’t exist. A “lie” is not just an incorrect statement. A lie would need to be known to be incorrect when made for it to qualify as a lie. Words do have meaning.
So, tell us all about the alleged control group, now.