This article refers to:
In the article, “Sample Selection in Randomized Experiments: A New Method Using Propensity Score Stratified Sampling” which appeared in Journal of Research on Educational Effectiveness, Volume 7, Number 1, pp. 114–135, the following text was omitted:
The research reported here was supported by the Institute of Education Sciences, U.S. Department of Education, through Grants R305A090150 and R305A100116 to Southwest Educational Development Corporation. The opinions expressed are those of the authors and do not represent views of the Institute or the U.S. Department of Education.