input file preparation

questions concerning analysis/theory using program MARK

input file preparation

Postby hilit » Tue Apr 01, 2008 7:24 am

Greeting everyone!
I am trying to build my input file.
i have 8 areas in the city, each area visited 5 times and stray cats were "captured-recaptured".
So, i have 8 groups (poor/rich neighbourhoods, different housing patterns), males/females, adults/kittens, neutered/non-neutered cats. How do i put all this data in MARK input file?

if i have for example 00110 case history for a adult neutered male, in a poor, private housing neighbourhood? i understand that i somehow have to code all of these covariates, but i'm guessing they cannot all be dummies (o/1), right? wrong?
Thanks,
Hilit
hilit
 
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Location: Tel Aviv, Israel

Re: input file preparation

Postby cooch » Tue Apr 01, 2008 7:38 am

hilit wrote:Greeting everyone!
I am trying to build my input file.
i have 8 areas in the city, each area visited 5 times and stray cats were "captured-recaptured".
So, i have 8 groups (poor/rich neighbourhoods, different housing patterns), males/females, adults/kittens, neutered/non-neutered cats. How do i put all this data in MARK input file?

if i have for example 00110 case history for a adult neutered male, in a poor, private housing neighbourhood? i understand that i somehow have to code all of these covariates, but i'm guessing they cannot all be dummies (o/1), right? wrong?
Thanks,
Hilit


Read Chapter 2 of the MARK book, as a starting point. In fact, at this stage, put away *your* data, and work through Chapter 1 -> 7 (at least) of the book, before going much further. The book can be found at

http://www.phidot.org/software/mark/docs/book/
cooch
 
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Postby hilit » Tue Apr 01, 2008 7:45 am

i have read and undertood some of the chapters. However, i didn't see anything about a case such as this. I saw that if you have one variable, like male/female, you write for an individual animal 1 in th appropriate sex and zero in the other. But what do i do if i have male female neutered non neutered? if i have a neutered male do i code him 1 1 (neutered and male) or do i need different coding for different grouping variables?
hilit
 
Posts: 11
Joined: Tue Apr 01, 2008 4:48 am
Location: Tel Aviv, Israel

Postby cooch » Tue Apr 01, 2008 7:53 am

hilit wrote:i have read and undertood some of the chapters. However, i didn't see anything about a case such as this. I saw that if you have one variable, like male/female, you write for an individual animal 1 in th appropriate sex and zero in the other. But what do i do if i have male female neutered non neutered? if i have a neutered male do i code him 1 1 (neutered and male) or do i need different coding for different grouping variables?


Have another read of section 2.1.1 in Chapter 2. It discusses an example of what you're talking about.
cooch
 
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Location: Cornell University

Postby hilit » Tue Apr 01, 2008 7:56 am

doing so right now... :)
hilit
 
Posts: 11
Joined: Tue Apr 01, 2008 4:48 am
Location: Tel Aviv, Israel


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