topic Re: Non parametric Cuzick test for trend in SAS in Statistical Procedures

Non parametric Cuzick test for trend in SAS

Ashwini_uci — Fri, 26 Jan 2018 01:04:14 GMT

Hi,

I have used following code to obtain percentages for some cardiac procedure complications, over the period of 10 years.

proc freq data=library.CRT;
tables (died complication1 complimortality majorcompli majcomplimortality hemreqtrans) *year /chisq;
where crt51=1;
Title 'Table 2- yearwise- 0051';
run;

I got the ouput that look like this:

To test the trend I need to obtain the p value ( to compare 10 counts of percentages over 10 years),by using Cuzick test for trend in SAS.

Is there any easy/simple way without using any macro to accomplish this in SAS? I have never used this test before.

Any help would be greatly appreciated!

Thanks,

Ashwini

Re: Non parametric Cuzick test for trend in SAS

Rick_SAS — Fri, 26 Jan 2018 15:54:12 GMT

If you have access to the SAS/IML language, you can use this blog post and program to get started.

Re: Non parametric Cuzick test for trend in SAS

PGStats — Tue, 13 Mar 2018 03:45:54 GMT

You would probably do better with the stratum adjusted Spearman rank correlation coefficient. It is hidden in proc freq as described here:

http://documentation.sas.com/?docsetId=statug&docsetTarget=statug_freq_details90.htm&docsetVersion=14.3&locale=en

To get the p-value for your data, create a dataset with columns Complication, Year, and Value.

Then run the program:

proc freq data=myData;
table Complication * Year * Value / scores=ridit cmh1 noprint;
ods output cmh=stratSpearman;
run;

proc print data=stratSpearman noobs; where statistic=1; run;

(untested)

Re: Non parametric Cuzick test for trend in SAS

Ashwini_uci — Mon, 12 Mar 2018 20:46:42 GMT

Thank you! This was helpful!

Ashwini

Re: Non parametric Cuzick test for trend in SAS

Ashwini_uci — Mon, 12 Mar 2018 20:49:43 GMT

Is is possible for you to post the link (that you've shared in the following message) again? For some reason, it opens the same message window.

Thanks!

Ashwini

Re: Non parametric Cuzick test for trend in SAS

PGStats — Tue, 13 Mar 2018 03:46:37 GMT

Sorry. I corrected the link.

Re: Non parametric Cuzick test for trend in SAS

Ashwini_uci — Wed, 25 Apr 2018 21:54:58 GMT

Thank you!