Offset term for proc Genmod (Poisson distribution)

LTromp — Thu, 23 Oct 2014 15:05:32 GMT

Hi,

I'm modelling claims frequency by using proc genmod for a GLM with Poisson distribution. I was hoping that someone could please help me understand the "offset" term better and when it should and shouldn't be used?

The data is at a per-policy level as in the example below, so I am unsure whether or not I should include the offset term. Please help!

Policyholder	Gender	Age	Months insured	Total number of claims	Total amount of claims
Peter	Male	22	6	1	$10 000
Sue	Female	32	12	0	0

- Thank you

Re: Offset term for proc Genmod (Poisson distribution)

brsinco — Fri, 24 Oct 2014 13:59:22 GMT

Use the offset term when the sampling duration differs between at least two subjects.

Example. If period = 6 for Peter and 12 for Sue, then your Proc GenMod code should contain offset=Period.

Hope this helps.

Brandy

topic Offset term for proc Genmod (Poisson distribution) in SAS Programming

Offset term for proc Genmod (Poisson distribution)

Re: Offset term for proc Genmod (Poisson distribution)