New CHaRMS working paper: Inference with difference-in-differences with a small number of groups

CHaRMS Working Paper 18/01:

S. Rokicki, J. Cohen, G. Fink, J. Salomon,  M. B. Landrum "Inference with difference-in-differences with a small number of groups"

https://ideas.repec.org/p/qub/charms/1801.html

Published Version