I am sure that I understand this but
drug3 != 0
will evaluate as 1 whenever -drug3- is not 0.
Thus you can count drugs by e.g.
gen c345 = (drug3 != 0) + (drug4 != 0) + (drug5 != 0)
Nick
[email protected]
Ziad El-Khatib
--------------------------------------------------------------------------------
I want to calculate sum of missed pills on 3 out of 5 drugs (drug1,
drug2..drug5).
Main drugs are drug1 and drug2, and the combination is either:
adherence level of:
drug1 + any 2 out of drug3,4,5
or
drug2 ? any 2 out of drug3,4,5
All of these drugs have value 0 when they were not used.
i thought first to add them by typing
gen drugsum = drug1+drug2+drug3+drug+4drug5
I assume i will get total sum, but when i do ratio, STATA count with
patients with dug value 0.
Any tips how to exclude counting patients with drug value = 0?
*
* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
