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How do I create a dummy variable for years?

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New User
Posts: 1

How do I create a dummy variable for years?

Hello,

 

I want to create a dummy variable for a regulatory policy called MSA.

 

For my model I have a sample size from years 1970-2014. 

 

If any years <1998 then MSA=0 and anything above 1998 MSA=1

 

If anyone can help me with the coding on this, I would really appreciate it.

 

Thank you all.

Super User
Posts: 19,850

Re: How do I create a dummy variable for years?

Standard if/then?

If year<1998 then MSA=0;
Else if year >=1998 then MSA=1;
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