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mccormsa
Calcite | Level 5 mccormsa
Calcite | Level 5

Autocorrelation and Poisson Distribution

Posted 03-16-2022 07:37 PM (586 views)

Hello! I am trying to figure out what procedure to use that will allow me to test and adjust for autocorrelation in non-normally distributed count data on which I am conducting an interrupted time series. Any advice is appreciated- thanks!

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Stu_SAS
SAS Employee Stu_SAS
SAS Employee

Re: Autocorrelation and Poisson Distribution

Posted 03-25-2022 03:48 PM (521 views)  |   In reply to mccormsa

Take a look at PROC COUNTREG.

https://support.sas.com/rnd/app/ets/procedures/ets_countreg.html

 

If it doesn't do everything you need, check out this excellent SGF 2015 paper by Michael Leonard and Bruce Elsheimer: Count Series Forecasting.

 

https://support.sas.com/resources/papers/proceedings15/SAS1754-2015.pdf

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