Programming the statistical procedures from SAS

Comparing rates on a non-independent sample

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New Contributor SW2
New Contributor
Posts: 2

Comparing rates on a non-independent sample

Hi, all,

 

I'm checking the increase rates of outpatient visits for certain diseases on the same sample. As you see,

The number of outpatient visits all increased after a time point. Among them, Disease1 had the highest increase rates(50%)

 

Is there any way to do a statistical analysis to compare the increase rates of ‘disease1’ 50% to that of 'total diseases' 27%? The sample is non-independent. I appreciate for any suggestion.

 

 

 

before

after

Increase rates

Number of visits on Disease1

100

150

50%

Number of visits on Disease2

100

120

20%

Number of visits on Disease3

100

110

10%

All diseases

300

380

27%

Grand Advisor
Posts: 16,907

Re: Comparing rates on a non-independent sample

Do you have individual level information or only aggregate information?
New Contributor SW2
New Contributor
Posts: 2

Re: Comparing rates on a non-independent sample

Yes, we have individual information.

Respected Advisor
Posts: 4,606

Re: Comparing rates on a non-independent sample

If you have the licence to SAS/ETS, you should consider proc countreg to fit your data. Look at the following example:

 

http://support.sas.com/documentation/cdl/en/etsug/67525/HTML/default/viewer.htm#etsug_countreg_examp...

PG
Grand Advisor
Posts: 9,458

Re: Comparing rates on a non-independent sample

Poisson Regression Model ?

 

http://support.sas.com/kb/24/188.html 

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