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st: summarize conditions within subjects in panel data
From
"Hoffman, George" <[email protected]>
To
"[email protected]" <[email protected]>
Subject
st: summarize conditions within subjects in panel data
Date
Mon, 29 Nov 2010 11:56:48 -0600
I've got a panel dataset (xt) uniquely identified by subject (id) and time (hour), sorted by id hour.
I'd like to generate a variable that counts the cumulative (within id, across hour) number of hours that a variable is less than 50.
My code so far:
gen varxl50 = varx <50 if varx <.
bysort patnum (hour): gen varxl50sum = sum(varxl50)
I'm running into problems because of missing values I think.
Does this code look right?
Is there a mode succinct way to code this?
Thanks in advance
George Hoffman
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