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hospitalb
2008 Jun 09
2
converting a data set to a format for time series analysis
...an
international clinical trial, the name of the hospital enrolling this
human subject, the date when the subject was enrolled, and a vector
with variables representing characteristics of the site (e.g., number
of beds in a hospital). my data sets looks like this:
subject hospital date_enrollment hospital_beds
1 hospitalA 1/3/2002 300
2 hospitalA 1/6/2002 300
3 hospitalB 2/4/2002 150
4 hospitalC 3/2/2002 200
to perform a time series analysis I am now trying to get to a format
that would give me the following variables:
month year site number_enrolled_subjects hospital_beds
the data would be display...