We would like to thank:
- Elena Badillo Goicoechea (Johns Hopkins University) for developing this webpage and the R package for conducting two-stage sampling.
- Daniel Litwok (Abt Associates) and Azim Shivji (University of Chicago) for developing SAS code for conducting two-stage sampling.
- Nancy Hartman (Westat) for conducting the literature searches to identify many of the publications referenced on this website.