Sunday, January 01, 2006

st: Right truncated Poisson for panel estimators

The dependent variable is a daily count of the number of clinically-meaningful adverse opioid-related symptoms (e.g., fatigue, drowsy, concentration) right-truncated at <= 3 on each day and the data is for 3 days.

Would you please advise on how to estimate this model with a random intercept and random coefficients for the independent variables time and amount of opioid consumed?

Relatedly, I would then like to estimate the above model (right-truncated) specified as a population-averaged model in order to used the results as input into an economic model. Would you please advise on how to accomplish this? I believe LIMDEP has such capabilities but I am rather reluctant to re-learn this program in the middle of a project.

Finally, if I must use LIMDEP to estimate the model, can I input the LIMDEP estimates into STATA in order to use the superior STATA facilities such as statsby (I've got 8 surgical-type dummies, gender, and 3 age categories by which to estimate predicted values).

Thank you, Mark

Mark E. Boye MBA, MPH, Ph.D. Associate Director WW Outcomes Research Midwest/Ann Arbor Development Site Pfizer Inc 1600/200/246 2800 Plymouth Road Ann Arbor, MI 48105-2430 Tel: 734-622-4856 Fax: 734-622-2055 E-mail:

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