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Dear All, I would be grateful if you can help me. My problem is the following: I have a data set like: ID time X1 X2 1 1 x111 x211 1 2 x112 x212 2 1 x121 x221 2 2 x122 x222 2 3 x123 x223 where X1 and X2 are 2 covariates and "time" is the time of observation and ID indicates the cluster. I want to merge the above data by creating a new variable "X" and "type" as follows: ID time X type 1 1 x111 X1 1 2 x11...

In response to a feature request for cpanel to have native support for dovecot: Rudimentary support was added in 11.23. Full support for Dovecot will be available in 11.24. -- Marshal Newrock 517-679-0699 x223 FreedomBI, LLC - http://www.freedombi.com -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 189 bytes Desc: not available URL: <http://dovecot.org/pipermail/dovecot/attachments/20080811/512255a6/attachment-000...

...r ways were are able to characterized background and compare them all. This is for the evaluation of chemicals in the environment. Michael J. Bock, PhD | Manager ENVIRON | www.environcorp.com <http://www.environcorp.com/> 136 Commercial Street, Suite 402 Portland, ME 04101 V: 207.347.4413 x223| F: 207.347.4384 |mbock@environcorp.com This message contains information that may be confidenti...{{dropped:11}}

...tient with id == 2 for the following data) Data format is like the stanford heart transplant data (Therneau et al 2000, p69), but the patients were not randomized in selection and the covariate balance is not achieved: id time censor tx x1 x21 (0,10] 1 0 x11 x122 (0,8 ] 0 0 x21 x222 (9,19] 1 1 x21 x223 (0,13] 0 1 x31 x32 Is counting process form of a Cox model (coxph with start, stop, censoring status ~ tx + x1 + x2 covariates) sufficient? Is it possible to implement the propensity score methodology (Rosenbaum et al, 1983) in such situations? Any ideas/suggestions would be higly appreciated. Than...