Bookmark and Share

Notice: On March 31, it was announced that Statalist is moving from an email list to a forum. The old list will shut down on April 23, and its replacement, statalist.org is already up and running.


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

st: Sampling question: whether to stratify


From   "Ilian, Henry (ACS)" <Henry.Ilian@dfa.state.ny.us>
To   "'statalist@hsphsun2.harvard.edu'" <statalist@hsphsun2.harvard.edu>
Subject   st: Sampling question: whether to stratify
Date   Wed, 20 Feb 2013 11:31:34 -0500

We are conducting a record-reading assessment of casework practice in a large child protective service agency. We have been asked to look separately at each geographic unit of the agency, which results in a very small sample of 27 for each unit (the most that can be handled in the time allotted by the available readers). Eventually all units will be sampled, and the sample size for the agency as a whole will be large enough for an agency-wide assessment. There are two types of cases we are looking at: those that do and those that do not have sufficient support for the allegation of child abuse or neglect which brought them to the agency's attention. The sample is stratified to get a representation of each. Additionally about half of the cases, agency-wide, are initiated by calls that come in outside of business hours. These calls are handled differently, and we have been asked to do a separate assessment of these cases.

My question is, given the large proportion of cases in the outside of business hours group, is it necessary to stratify the sample further or can we expect that a sufficient sample of these cases will be generated as part of the overall sample?

Thanks,

Henry

Confidentiality Notice: This e-mail communication, and any attachments, contains confidential and privileged information for the exclusive use of the recipient(s) named above. If you are not an intended recipient, or the employee or agent responsible to deliver it to an intended recipient, you are hereby notified that you have received this communication in error and that any review, disclosure, dissemination, distribution or copying of it or its contents is prohibited. If you have received this communication in error, please notify me immediately by replying to this message and delete this communication from your computer. Thank you.


*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/faqs/resources/statalist-faq/
*   http://www.ats.ucla.edu/stat/stata/


© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   Site index