From cristinacametti at yahoo.it Fri Mar 24 09:40:46 2017 From: cristinacametti at yahoo.it (Cristina Cametti) Date: Fri, 24 Mar 2017 09:40:46 +0100 Subject: [R list package] R code for "treat" References: <28E921E2-5400-4DD2-AD00-438E1B765597.ref@yahoo.it> Message-ID: <526298D3-CE4A-42D4-8C3C-BC78EA5BD94E@yahoo.it> Dear all, I apologize in advanced for my silly question. I am a student and I am trying to conduct an item count technique analysis but I have one problem with the r code. I am using the ictreg function, but I am not able to create the multi-valued variable ?treat? where zero represents the control condition. Can someone suggests the r code to compute this variable? I tried to search everywhere but I didn?t find anything conclusive. Maybe it is easier than I immagine, but I am blocked. Thank you very and I am sorry again for this very silly question. Kind Regards, Cristina C. Cristina Cametti