Manual Event (Session ID,DateTime,Event) = bdjg4oucbrus5tiv5g0ldkgp85 20251023073958 /communities/i-have-read-some-discussions-about-using-the-pre-experimental-study-for-the-elderly-sleep-intervention-may-i-ask-the-reason-that-it-is-called-pre-experimental-instead-of-calling-it-experimental-desig/