Hi
For a multistage cluster sampling, I need to randomly
select clusters based on probability proportional to
size in STATA. Hypothetically, if I want to select 3
clusters randomly out of a total 5 with each cluster
having following number of households: Cluster-1 500
households, Cluster-2 1000 households, Cluster-3 1500
households, Cluster-4 2000 households and Cluster-5
3000 households. Hence total number of households is
8000. I was advised that for each cluster I first need
to calculate weight by dividing households in cluster
with total number of households, so that for cluster-1
weight would be 500/8000 = 0.0625.
Another advise i recieved was that let the number of
households in clusters be the composite size measures.
And i won't need to calculate the proportion of the
total as STATA should that for me.
I would be very grateful if someone could help me as
to how after calculating weights for each cluster I
may randomly select say 3 clusters out of total 5,
based on probability proportional to size in STATA.
Thanks indeed…
Mason
__________________________________
Do you Yahoo!?
New and Improved Yahoo! Mail - Send 10MB messages!
http://promotions.yahoo.com/new_mail
*
* 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/