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Sanjoy posted on Thursday, March 02, 2006  4:00 pm



Dear Professors Following is the situation we have to handle ... could you tell me please whether can we estimate the model with MPlus 4 (my version is Base + Mixture) 1. We have 386 observations (Y= continuous dependent variable, X1= time dependent covariates, X2=constant covariates) over 22 Time periods. 2. For Some observations the dependent variable (Y) is interval censored. 3. The Panel is "unbalanced" in a sense that for some of the observations the relevant time period is less than 22 4. We want to estimate "fixed effect" and "random effect" both Thanks and regards PS: Thanks to the MPlus team for coming up with the version 4.0. Wish all of them the best in their research pursuit. 

bmuthen posted on Thursday, March 02, 2006  9:02 pm



That looks quite doable, except I don't know what interval censored y implies. 

Sanjoy posted on Friday, March 03, 2006  12:55 pm



Thank you Professor ... this is what I have meant by censoring Y's in our model represent repayment by a firm (i) ... we have data recorded from 1980 (t=0) to 2002 (t = 22) 1. There are some firms for whom who have repayment information made at t= 0 as well as t=22 ... doubly censored.... (we do not know when did they start and when could they finish) 2. Some firms are on repayment at t=0 and end their repayment at say t=15 ...left censored...(we do not know when did they start but know when did they end) 3. Some firms start their repayment at say t=10 and still keep repaying at t=22 ... right censored ...(we know when did they start but do not know when could they finish) Regards 

bmuthen posted on Saturday, March 04, 2006  4:30 pm



Does this relate to discretetime survival modeling? See the MuthenMasyn (2005) JEBS paper on our web site (Recent Papers). 

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