st: Panel data unbalanced--time as indep variable?

[Steven Archambault <archstevej@gmail.com>]

Hi all,

Would it ever make sense to have time as an independent variable on an
unbalanced panel regression (fixed or random effects)?
I could see doing it for balanced time series data, but what about in
my case with 8 years and about 90 panels? I'd appreciate some
feedback, or some resources to read.

Thanks,
Steve
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