Finding the proper categorical analysis

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Anonymous
Finding the proper categorical analysis 2016-01-26 18:30:27 Post No. 7812265
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Finding the proper categorical analysis Anonymous 2016-01-26 18:30:27 Post No. 7812265 [Report]

Hi /sci/,

I'm trying to find the proper categorical analysis tool to test the independence two contingency tables (which you could see as a 3D contingency table I guess).

I have the following table:

CatA1,CatA2,CatA3
40,190,50
200,150,50
90,110,20

(See next post for how I'm visualizing it)

Now, this table is from some point in time.
At another point in time, I have a similar table with different data.

What I'm trying to figure out is how to test for independence of the two tables.

If I just wanted to test the table in itself, the answer would of course be to do a [math]\chi^2[/math]-test, but I don't think that's valid here.

Could you help me out?
Pic related, it's the book I'm using.

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Anonymous 2016-01-26 18:31:14 Post No.7812272
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Anonymous 2016-01-26 18:31:14 Post No.7812272 [Report]

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This is the format I'm using to interpret the data at one point in time.

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Anonymous 2016-01-26 18:41:55 Post No.7812297
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Anonymous 2016-01-26 18:41:55 Post No.7812297 [Report]

I'm not too sure but my first intuition would be this

http://sphweb.bumc.bu.edu/otlt/MPH-Modules/BS/BS704-EP713_Confounding-EM/BS704-EP713_Confounding-EM7.html

I would need to read up. I have that text book available so a page or reference would help me.

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Anonymous 2016-01-26 18:46:18 Post No.7812307
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Anonymous 2016-01-26 18:46:18 Post No.7812307 [Report]

>>7812297
Thanks, I'll give this a read through.

It's not actually something from the book, but my supervisor gave me this one to read because he thought it might contain something for it.
I haven't been able to find anything about this kind of comparison so far though.

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Anonymous 2016-01-26 18:50:21 Post No.7812319
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Anonymous 2016-01-26 18:50:21 Post No.7812319 [Report]

>>7812297
Having read it, I think this is exactly what I need.
Thanks a lot!

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Anonymous 2016-01-26 18:50:24 Post No.7812320
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Anonymous 2016-01-26 18:50:24 Post No.7812320 [Report]

>>7812307
That makes it harder. I thought you were taking a course with that textbook. I am currently out of my office but I'll do some reading once I return.

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Anonymous 2016-01-26 18:52:17 Post No.7812327
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Anonymous 2016-01-26 18:52:17 Post No.7812327 [Report]

>>7812320
The Cochran-Mantel-Haenszel Test is introduced on page 227 of that book, if you still want to look it up

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Anonymous 2016-01-26 18:52:22 Post No.7812328
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Anonymous 2016-01-26 18:52:22 Post No.7812328 [Report]

>>7812319
I thought so. Your bill for Statistical consulting service will arrive shortly.