Hi,
I have a dataset which looks like the one below
Individual 1 individual 2
Time count count
1 0 1
2 1 0
3 0 0
4 0 0
5 3 1
6 0 0
7 1 0
Time represents months and count represents the occurance of an event. I
understand that count might follow a zero inflated poisson distribution or
a negative binomial distribution.
Are there any stata command to check if the data fits these distributions?
(just like we have the shapiro-wilk test for normality.).
My objective is to see if there is any increase in the counts between say
period1 (time 1 to 3) and period2 (time 4 to7) for each individual. And for
all individuals taken together...
Regards
rajesh
*
* 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/