Hello everyone,
I am trying to use matching approach in my study. I am using the following stata code:
Is there any restriction on the choice of nn, or any guidance on how to decide the number of nearest neighbors in this kind of setting?
Thanks in advance.
I am trying to use matching approach in my study. I am using the following stata code:
- kmatch ps treated x1 x2 x3 x4, att ematch(state county) wgen(weight) nn(#) caliper(0.03)
Is there any restriction on the choice of nn, or any guidance on how to decide the number of nearest neighbors in this kind of setting?
Thanks in advance.
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