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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | # Replicate several count data models of doctor visits from
# A. C. Cameron and P. K. Trivedi, "Regression Analysis of
# Count Data" (Cambridge, 1998).
# See also http://cameron.econ.ucdavis.edu/racd/count.html
# and http://www.stanford.edu/~clint/bench/ for TSP results
open rac3d.gdt --quiet
list X = 0 SEX AGE AGESQ INCOME LEVYPLUS FREEPOOR FREEREPA \
ILLNESS ACTDAYS HSCORE CHCOND1 CHCOND2
# Poisson regression
poisson DVISITS X
# Negative binomial (model II)
negbin DVISITS X
# Negative binomial (model I)
negbin DVISITS X --model1
# ordered probit
probit DVISITS X
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