quiet-pharmacist-40710
11/15/2023, 11:48 AMrhythmic-agent-34208
11/15/2023, 11:48 AMbrief-honey-45610
11/15/2023, 3:16 PMquiet-pharmacist-40710
11/16/2023, 10:15 AMrhythmic-agent-34208
11/16/2023, 6:31 PMquiet-pharmacist-40710
11/16/2023, 6:47 PMrhythmic-agent-34208
11/16/2023, 8:27 PMquiet-pharmacist-40710
11/17/2023, 10:17 AMhelpful-application-7107
11/18/2023, 12:27 AMso this can be explained by lower retention in the baseline group (for iOS) and users from phase 1 not being present in phase two?Yeah, that's my hypothesis if you didn't re-randomize. Carry over bias would mean that you have more people retaining in treatment from phase 1, so if you don't re-randomize, you'll end up with more users from that group in your phase 2 and your treatment will be over represented. Not sure about android issues. An A/A test or two might be useful.