topic Re: p-value within tables in SAS Procedures

p-value within tables

Jimbo — Sun, 10 Apr 2011 09:03:39 GMT

Hi,

Sorry if this is an old question but I cannot find a answer in the forum / support materials.

I'm new to SAS and am trying to create a table to compare baseline characteristics between two groups (intervention / no intervention).

Some of the baseline data is binary (eg diabetes / not) and some is numerical (eg age).

Using either proc report / tabulate I can show that between group 1 and 2 the average age / percent of diabetics looks roughly the same, but I am at a loss to show that they are 'statistically comparable' by incorporating p-values for each characteristic between groups.

Is it possible to incorporate this calculation or do I need to independently perform the calculation and subsequently incorporate this data to my table?

Many thanks for any help,
Jim

Re: p-value within tables

Ksharp — Mon, 11 Apr 2011 03:56:16 GMT

Yes.You need to independently perform the calculation and subsequently incorporate this data to your table.
If they were matched obs then firstly calculate their difference x=a-b ,secondly to test whether x equal zero.
If they were independently then use proc ttest or proc nparm1way to calculate the p-value.

Ksharp

Re: p-value within tables

Jimbo — Mon, 11 Apr 2011 14:35:39 GMT

Many thanks,

Jim