→ bmka:Is this a randomized clinical trial? If yes, you may 08/23 22:14
→ bmka:consider stratified randomization, that is, the 08/23 22:15
→ bmka:randomization is carried out at each site. 08/23 22:16
→ bmka:You did not specify the endpoint of this study, hence I 08/23 22:17
→ bmka:can not comment on statistical methods. 08/23 22:18